diff --git a/cef_paths2.gypi b/cef_paths2.gypi
index 03d016252..fcd9af987 100644
--- a/cef_paths2.gypi
+++ b/cef_paths2.gypi
@@ -162,7 +162,6 @@
       'tests/cefclient/client_switches.h',
       'tests/cefclient/dialog_test.cc',
       'tests/cefclient/dialog_test.h',
-      'tests/cefclient/dragdrop_events.h',
       'tests/cefclient/main_context.cc',
       'tests/cefclient/main_context.h',
       'tests/cefclient/main_context_impl.cc',
@@ -171,8 +170,9 @@
       'tests/cefclient/main_message_loop.cc',
       'tests/cefclient/main_message_loop_std.h',
       'tests/cefclient/main_message_loop_std.cc',
-      'tests/cefclient/osrenderer.h',
-      'tests/cefclient/osrenderer.cc',
+      'tests/cefclient/osr_dragdrop_events.h',
+      'tests/cefclient/osr_renderer.h',
+      'tests/cefclient/osr_renderer.cc',
       'tests/cefclient/performance_test.cc',
       'tests/cefclient/performance_test.h',
       'tests/cefclient/performance_test_setup.h',
@@ -189,15 +189,15 @@
     'cefclient_sources_win': [
       'tests/cefclient/cefclient.exe.manifest',
       'tests/cefclient/cefclient.rc',
-      'tests/cefclient/cefclient_osr_dragdrop_win.h',
-      'tests/cefclient/cefclient_osr_dragdrop_win.cc',
-      'tests/cefclient/cefclient_osr_widget_win.h',
-      'tests/cefclient/cefclient_osr_widget_win.cc',
       'tests/cefclient/cefclient_win.cc',
       'tests/cefclient/client_handler_win.cc',
       'tests/cefclient/main_context_impl_win.cc',
       'tests/cefclient/main_message_loop_multithreaded_win.h',
       'tests/cefclient/main_message_loop_multithreaded_win.cc',
+      'tests/cefclient/osr_dragdrop_win.h',
+      'tests/cefclient/osr_dragdrop_win.cc',
+      'tests/cefclient/osr_widget_win.h',
+      'tests/cefclient/osr_widget_win.cc',
       'tests/cefclient/resource.h',
       'tests/cefclient/res/cefclient.ico',
       'tests/cefclient/res/small.ico',
@@ -208,10 +208,10 @@
     ],
     'cefclient_sources_mac': [
       'tests/cefclient/cefclient_mac.mm',
-      'tests/cefclient/cefclient_osr_widget_mac.h',
-      'tests/cefclient/cefclient_osr_widget_mac.mm',
       'tests/cefclient/client_handler_mac.mm',
       'tests/cefclient/main_context_impl_posix.cc',
+      'tests/cefclient/osr_widget_mac.h',
+      'tests/cefclient/osr_widget_mac.mm',
       'tests/cefclient/resource_util_mac.mm',
       'tests/cefclient/resource_util_posix.cc',
       'tests/cefclient/window_test_mac.mm',
@@ -260,10 +260,10 @@
     ],
     'cefclient_sources_linux': [
       'tests/cefclient/cefclient_gtk.cc',
-      'tests/cefclient/cefclient_osr_widget_gtk.h',
-      'tests/cefclient/cefclient_osr_widget_gtk.cc',
       'tests/cefclient/client_handler_gtk.cc',
       'tests/cefclient/main_context_impl_posix.cc',
+      'tests/cefclient/osr_widget_gtk.h',
+      'tests/cefclient/osr_widget_gtk.cc',
       'tests/cefclient/print_handler_gtk.cc',
       'tests/cefclient/print_handler_gtk.h',
       'tests/cefclient/resource_util_linux.cc',
diff --git a/tests/cefclient/cefclient_gtk.cc b/tests/cefclient/cefclient_gtk.cc
index 73abd926c..92358a735 100644
--- a/tests/cefclient/cefclient_gtk.cc
+++ b/tests/cefclient/cefclient_gtk.cc
@@ -21,12 +21,12 @@
 #include "include/cef_browser.h"
 #include "include/cef_frame.h"
 #include "include/wrapper/cef_helpers.h"
-#include "cefclient/cefclient_osr_widget_gtk.h"
 #include "cefclient/client_app.h"
 #include "cefclient/client_handler.h"
 #include "cefclient/client_switches.h"
 #include "cefclient/main_context_impl.h"
 #include "cefclient/main_message_loop_std.h"
+#include "cefclient/osr_widget_gtk.h"
 #include "cefclient/resource.h"
 #include "cefclient/test_runner.h"
 
@@ -41,7 +41,7 @@ int g_toolbar_height = 0;
 // Height of the integrated menu bar (if any) at the top of the GTK window.
 int g_menubar_height = 0;
 
-class MainBrowserProvider : public OSRBrowserProvider {
+class MainBrowserProvider : public client::OSRBrowserProvider {
   virtual CefRefPtr<CefBrowser> GetBrowser() {
     if (g_handler.get())
       return g_handler->GetBrowser();
@@ -450,9 +450,9 @@ int main(int argc, char* argv[]) {
         command_line->HasSwitch(cefclient::kShowUpdateRect);
 
     // Create the GTKGL surface.
-    CefRefPtr<OSRWindow> osr_window =
-        OSRWindow::Create(&g_main_browser_provider, transparent,
-                          show_update_rect, vbox);
+    CefRefPtr<client::OSRWindow> osr_window =
+        client::OSRWindow::Create(&g_main_browser_provider, transparent,
+                                  show_update_rect, vbox);
 
     // Show the GTK window.
     gtk_widget_show_all(GTK_WIDGET(window));
diff --git a/tests/cefclient/cefclient_mac.mm b/tests/cefclient/cefclient_mac.mm
index eff0cd7fc..e96c402dc 100644
--- a/tests/cefclient/cefclient_mac.mm
+++ b/tests/cefclient/cefclient_mac.mm
@@ -9,12 +9,12 @@
 #import "include/cef_application_mac.h"
 #include "include/cef_browser.h"
 #include "include/cef_frame.h"
-#include "cefclient/cefclient_osr_widget_mac.h"
 #include "cefclient/client_app.h"
 #include "cefclient/client_handler.h"
 #include "cefclient/client_switches.h"
 #include "cefclient/main_context_impl.h"
 #include "cefclient/main_message_loop_std.h"
+#include "cefclient/osr_widget_mac.h"
 #include "cefclient/resource.h"
 #include "cefclient/resource_util.h"
 #include "cefclient/test_runner.h"
@@ -22,7 +22,7 @@
 // The global ClientHandler reference.
 CefRefPtr<ClientHandler> g_handler;
 
-class MainBrowserProvider : public OSRBrowserProvider {
+class MainBrowserProvider : public client::OSRBrowserProvider {
   virtual CefRefPtr<CefBrowser> GetBrowser() {
     if (g_handler.get())
       return g_handler->GetBrowser();
@@ -443,8 +443,8 @@ void AddMenuItem(NSMenu *menu, NSString* label, int idval) {
     const bool show_update_rect =
         command_line->HasSwitch(cefclient::kShowUpdateRect);
 
-    CefRefPtr<OSRWindow> osr_window =
-        OSRWindow::Create(&g_main_browser_provider, transparent,
+    CefRefPtr<client::OSRWindow> osr_window =
+        client::OSRWindow::Create(&g_main_browser_provider, transparent,
             show_update_rect, contentView,
             CefRect(0, 0, kWindowWidth, kWindowHeight));
     window_info.SetAsWindowless(osr_window->GetWindowHandle(), transparent);
diff --git a/tests/cefclient/cefclient_win.cc b/tests/cefclient/cefclient_win.cc
index 8ba2b99f6..bd5bf52df 100644
--- a/tests/cefclient/cefclient_win.cc
+++ b/tests/cefclient/cefclient_win.cc
@@ -16,13 +16,13 @@
 #include "include/cef_frame.h"
 #include "include/cef_sandbox_win.h"
 #include "include/wrapper/cef_closure_task.h"
-#include "cefclient/cefclient_osr_widget_win.h"
 #include "cefclient/client_app.h"
 #include "cefclient/client_handler.h"
 #include "cefclient/client_switches.h"
 #include "cefclient/main_context_impl.h"
 #include "cefclient/main_message_loop_multithreaded_win.h"
 #include "cefclient/main_message_loop_std.h"
+#include "cefclient/osr_widget_win.h"
 #include "cefclient/resource.h"
 #include "cefclient/test_runner.h"
 #include "cefclient/util_win.h"
@@ -64,7 +64,7 @@ INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
 // The global ClientHandler reference.
 CefRefPtr<ClientHandler> g_handler;
 
-class MainBrowserProvider : public OSRBrowserProvider {
+class MainBrowserProvider : public client::OSRBrowserProvider {
   virtual CefRefPtr<CefBrowser> GetBrowser() {
     if (g_handler.get())
       return g_handler->GetBrowser();
@@ -225,8 +225,8 @@ static void SetFocusToBrowser(CefRefPtr<CefBrowser> browser) {
   if (CefCommandLine::GetGlobalCommandLine()->HasSwitch(
           cefclient::kOffScreenRenderingEnabled)) {
     // Give focus to the OSR window.
-    CefRefPtr<OSRWindow> osr_window =
-        static_cast<OSRWindow*>(g_handler->GetOSRHandler().get());
+    CefRefPtr<client::OSRWindow> osr_window =
+        static_cast<client::OSRWindow*>(g_handler->GetOSRHandler().get());
     if (osr_window)
       ::SetFocus(osr_window->hwnd());
   } else {
@@ -391,9 +391,9 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
         const bool show_update_rect =
             command_line->HasSwitch(cefclient::kShowUpdateRect);
 
-        CefRefPtr<OSRWindow> osr_window =
-            OSRWindow::Create(&g_main_browser_provider, transparent,
-                              show_update_rect);
+        CefRefPtr<client::OSRWindow> osr_window =
+            client::OSRWindow::Create(&g_main_browser_provider, transparent,
+                                      show_update_rect);
         osr_window->CreateWidget(hWnd, rect, hInst, szOSRWindowClass);
         info.SetAsWindowless(osr_window->hwnd(), transparent);
         g_handler->SetOSRHandler(osr_window.get());
@@ -495,8 +495,8 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
       const bool offscreen = CefCommandLine::GetGlobalCommandLine()->HasSwitch(
           cefclient::kOffScreenRenderingEnabled);
       if (offscreen) {
-        CefRefPtr<OSRWindow> osr_window =
-            static_cast<OSRWindow*>(g_handler->GetOSRHandler().get());
+        CefRefPtr<client::OSRWindow> osr_window =
+            static_cast<client::OSRWindow*>(g_handler->GetOSRHandler().get());
         if (osr_window)
           osr_window->WasHidden(wParam == SIZE_MINIMIZED);
       }
diff --git a/tests/cefclient/dragdrop_events.h b/tests/cefclient/osr_dragdrop_events.h
similarity index 58%
rename from tests/cefclient/dragdrop_events.h
rename to tests/cefclient/osr_dragdrop_events.h
index 7d8a8f800..3063405e4 100644
--- a/tests/cefclient/dragdrop_events.h
+++ b/tests/cefclient/osr_dragdrop_events.h
@@ -2,23 +2,35 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_DRAGDROP_EVENTS_H_
-#define CEF_TESTS_CEFCLIENT_DRAGDROP_EVENTS_H_
-#pragma once
+#ifndef CEF_TESTS_CEFCLIENT_OSR_DRAGDROP_EVENTS_H_
+#define CEF_TESTS_CEFCLIENT_OSR_DRAGDROP_EVENTS_H_
+
 #include "include/cef_render_handler.h"
 #include "cefclient/client_handler.h"
 
-class DragEvents {
+namespace client {
+
+class OsrDragEvents {
  public:
   virtual CefBrowserHost::DragOperationsMask OnDragEnter(
       CefRefPtr<CefDragData> drag_data,
       CefMouseEvent ev,
       CefBrowserHost::DragOperationsMask effect) = 0;
-  virtual CefBrowserHost::DragOperationsMask OnDragOver(CefMouseEvent ev,
+
+  virtual CefBrowserHost::DragOperationsMask OnDragOver(
+      CefMouseEvent ev,
       CefBrowserHost::DragOperationsMask effect) = 0;
+
   virtual void OnDragLeave() = 0;
-  virtual CefBrowserHost::DragOperationsMask OnDrop(CefMouseEvent ev,
+
+  virtual CefBrowserHost::DragOperationsMask OnDrop(
+      CefMouseEvent ev,
       CefBrowserHost::DragOperationsMask effect) = 0;
+
+ protected:
+  virtual ~OsrDragEvents() {}
 };
 
-#endif  // CEF_TESTS_CEFCLIENT_DRAGDROP_EVENTS_H_
+}  // namespace client
+
+#endif  // CEF_TESTS_CEFCLIENT_OSR_DRAGDROP_EVENTS_H_
diff --git a/tests/cefclient/cefclient_osr_dragdrop_win.cc b/tests/cefclient/osr_dragdrop_win.cc
similarity index 97%
rename from tests/cefclient/cefclient_osr_dragdrop_win.cc
rename to tests/cefclient/osr_dragdrop_win.cc
index 9d0125cf5..690d932b6 100644
--- a/tests/cefclient/cefclient_osr_dragdrop_win.cc
+++ b/tests/cefclient/osr_dragdrop_win.cc
@@ -2,7 +2,7 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#include "cefclient/cefclient_osr_dragdrop_win.h"
+#include "cefclient/osr_dragdrop_win.h"
 
 #if defined(CEF_USE_ATL)
 
@@ -15,8 +15,10 @@
 
 #include "include/wrapper/cef_helpers.h"
 #include "cefclient/bytes_write_handler.h"
-#include "cefclient/cefclient_osr_widget_win.h"
 #include "cefclient/resource.h"
+#include "cefclient/util_win.h"
+
+namespace client {
 
 namespace {
 
@@ -48,7 +50,7 @@ CefMouseEvent ToMouseEvent(POINTL p, DWORD key_state, HWND hWnd) {
   ScreenToClient(hWnd, &screen_point);
   ev.x = screen_point.x;
   ev.y = screen_point.y;
-  ev.modifiers = OSRWindow::GetCefMouseModifiers(key_state);
+  ev.modifiers = GetCefMouseModifiers(key_state);
   return ev;
 }
 
@@ -358,14 +360,15 @@ CefRefPtr<CefDragData> DataObjectToDragData(IDataObject* data_object) {
 }  // namespace
 
 
-CComPtr<DropTargetWin> DropTargetWin::Create(DragEvents* callback, HWND hWnd) {
+CComPtr<DropTargetWin> DropTargetWin::Create(OsrDragEvents* callback,
+                                             HWND hWnd) {
   return CComPtr<DropTargetWin>(new DropTargetWin(callback, hWnd));
 }
 
 HRESULT DropTargetWin::DragEnter(IDataObject* data_object,
-                                  DWORD key_state,
-                                  POINTL cursor_position,
-                                  DWORD* effect) {
+                                 DWORD key_state,
+                                 POINTL cursor_position,
+                                 DWORD* effect) {
   if (!callback_)
     return E_UNEXPECTED;
 
@@ -649,4 +652,6 @@ DataObjectWin::DataObjectWin(FORMATETC* fmtetc, STGMEDIUM* stgmed, int count)
   }
 }
 
+}  // namespace client
+
 #endif  // defined(CEF_USE_ATL)
diff --git a/tests/cefclient/cefclient_osr_dragdrop_win.h b/tests/cefclient/osr_dragdrop_win.h
similarity index 94%
rename from tests/cefclient/cefclient_osr_dragdrop_win.h
rename to tests/cefclient/osr_dragdrop_win.h
index 53336e523..0573ae12c 100644
--- a/tests/cefclient/cefclient_osr_dragdrop_win.h
+++ b/tests/cefclient/osr_dragdrop_win.h
@@ -4,7 +4,6 @@
 
 #ifndef CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_DRAGDROP_WIN_H_
 #define CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_DRAGDROP_WIN_H_
-#pragma once
 
 // When generating projects with CMake the CEF_USE_ATL value will be defined
 // automatically if using a supported Visual Studio version. Pass -DUSE_ATL=OFF
@@ -18,7 +17,9 @@
 #include <objidl.h>
 #include <stdio.h>
 
-#include "cefclient/dragdrop_events.h"
+#include "cefclient/osr_dragdrop_events.h"
+
+namespace client {
 
 #define DEFAULT_QUERY_INTERFACE(__Class) \
   HRESULT __stdcall QueryInterface(const IID& iid, void** object) { \
@@ -52,7 +53,7 @@
 
 class DropTargetWin : public IDropTarget {
  public:
-  static CComPtr<DropTargetWin> Create(DragEvents* callback, HWND hWnd);
+  static CComPtr<DropTargetWin> Create(OsrDragEvents* callback, HWND hWnd);
 
   CefBrowserHost::DragOperationsMask StartDragging(
       CefRefPtr<CefBrowser> browser,
@@ -81,14 +82,14 @@ class DropTargetWin : public IDropTarget {
   IUNKNOWN_IMPLEMENTATION()
 
  protected:
-  explicit DropTargetWin(DragEvents* callback, HWND hWnd) :
-      ref_count_(0),
-      callback_(callback),
-      hWnd_(hWnd) {}
+  DropTargetWin(OsrDragEvents* callback, HWND hWnd)
+      : ref_count_(0),
+        callback_(callback),
+        hWnd_(hWnd) {}
   virtual ~DropTargetWin() {}
 
  private:
-  DragEvents* callback_;
+  OsrDragEvents* callback_;
   HWND hWnd_;
 
   CefRefPtr<CefDragData> current_drag_data_;
@@ -183,6 +184,8 @@ class DataObjectWin : public IDataObject {
   explicit DataObjectWin(FORMATETC *fmtetc, STGMEDIUM *stgmed, int count);
 };
 
+}  // namespace client
+
 #endif  // defined(CEF_USE_ATL)
 
 #endif  // CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_DRAGDROP_WIN_H_
diff --git a/tests/cefclient/osrenderer.cc b/tests/cefclient/osr_renderer.cc
similarity index 89%
rename from tests/cefclient/osrenderer.cc
rename to tests/cefclient/osr_renderer.cc
index f649a2613..29885d1f3 100644
--- a/tests/cefclient/osrenderer.cc
+++ b/tests/cefclient/osr_renderer.cc
@@ -2,7 +2,7 @@
 // reserved. Use of this source code is governed by a BSD-style license
 // that can be found in the LICENSE file.
 
-#include "cefclient/osrenderer.h"
+#include "cefclient/osr_renderer.h"
 
 #if defined(OS_WIN)
 #include <gl/gl.h>
@@ -39,8 +39,10 @@
 #define VERIFY_NO_ERROR
 #endif
 
-ClientOSRenderer::ClientOSRenderer(bool transparent,
-                                   bool show_update_rect)
+namespace client {
+
+OsrRenderer::OsrRenderer(bool transparent,
+                         bool show_update_rect)
     : transparent_(transparent),
       show_update_rect_(show_update_rect),
       initialized_(false),
@@ -51,11 +53,11 @@ ClientOSRenderer::ClientOSRenderer(bool transparent,
       spin_y_(0) {
 }
 
-ClientOSRenderer::~ClientOSRenderer() {
+OsrRenderer::~OsrRenderer() {
   Cleanup();
 }
 
-void ClientOSRenderer::Initialize() {
+void OsrRenderer::Initialize() {
   if (initialized_)
     return;
 
@@ -80,12 +82,12 @@ void ClientOSRenderer::Initialize() {
   initialized_ = true;
 }
 
-void ClientOSRenderer::Cleanup() {
+void OsrRenderer::Cleanup() {
   if (texture_id_ != 0)
     glDeleteTextures(1, &texture_id_);
 }
 
-void ClientOSRenderer::Render() {
+void OsrRenderer::Render() {
   if (view_width_ == 0 || view_height_ == 0)
     return;
 
@@ -196,23 +198,23 @@ void ClientOSRenderer::Render() {
   }
 }
 
-void ClientOSRenderer::OnPopupShow(CefRefPtr<CefBrowser> browser,
-                                   bool show) {
+void OsrRenderer::OnPopupShow(CefRefPtr<CefBrowser> browser,
+                              bool show) {
   if (!show) {
     // Clear the popup rectangle.
     ClearPopupRects();
   }
 }
 
-void ClientOSRenderer::OnPopupSize(CefRefPtr<CefBrowser> browser,
-                                   const CefRect& rect) {
+void OsrRenderer::OnPopupSize(CefRefPtr<CefBrowser> browser,
+                              const CefRect& rect) {
   if (rect.width <= 0 || rect.height <= 0)
     return;
   original_popup_rect_ = rect;
   popup_rect_ = GetPopupRectInWebView(original_popup_rect_);
 }
 
-CefRect ClientOSRenderer::GetPopupRectInWebView(const CefRect& original_rect) {
+CefRect OsrRenderer::GetPopupRectInWebView(const CefRect& original_rect) {
   CefRect rc(original_rect);
   // if x or y are negative, move them to 0.
   if (rc.x < 0)
@@ -232,15 +234,15 @@ CefRect ClientOSRenderer::GetPopupRectInWebView(const CefRect& original_rect) {
   return rc;
 }
 
-void ClientOSRenderer::ClearPopupRects() {
+void OsrRenderer::ClearPopupRects() {
   popup_rect_.Set(0, 0, 0, 0);
   original_popup_rect_.Set(0, 0, 0, 0);
 }
 
-void ClientOSRenderer::OnPaint(CefRefPtr<CefBrowser> browser,
-                               CefRenderHandler::PaintElementType type,
-                               const CefRenderHandler::RectList& dirtyRects,
-                               const void* buffer, int width, int height) {
+void OsrRenderer::OnPaint(CefRefPtr<CefBrowser> browser,
+                          CefRenderHandler::PaintElementType type,
+                          const CefRenderHandler::RectList& dirtyRects,
+                          const void* buffer, int width, int height) {
   if (!initialized_)
     Initialize();
 
@@ -326,12 +328,14 @@ void ClientOSRenderer::OnPaint(CefRefPtr<CefBrowser> browser,
   }
 }
 
-void ClientOSRenderer::SetSpin(float spinX, float spinY) {
+void OsrRenderer::SetSpin(float spinX, float spinY) {
   spin_x_ = spinX;
   spin_y_ = spinY;
 }
 
-void ClientOSRenderer::IncrementSpin(float spinDX, float spinDY) {
+void OsrRenderer::IncrementSpin(float spinDX, float spinDY) {
   spin_x_ -= spinDX;
   spin_y_ -= spinDY;
 }
+
+}  // namespace client
diff --git a/tests/cefclient/osrenderer.h b/tests/cefclient/osr_renderer.h
similarity index 85%
rename from tests/cefclient/osrenderer.h
rename to tests/cefclient/osr_renderer.h
index 3ccb6b3a0..473a80c5a 100644
--- a/tests/cefclient/osrenderer.h
+++ b/tests/cefclient/osr_renderer.h
@@ -2,18 +2,20 @@
 // reserved. Use of this source code is governed by a BSD-style license
 // that can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_OSRENDERER_H_
-#define CEF_TESTS_CEFCLIENT_OSRENDERER_H_
+#ifndef CEF_TESTS_CEFCLIENT_OSR_RENDERER_H_
+#define CEF_TESTS_CEFCLIENT_OSR_RENDERER_H_
 #pragma once
 
 #include "include/cef_browser.h"
 #include "include/cef_render_handler.h"
 
-class ClientOSRenderer {
+namespace client {
+
+class OsrRenderer {
  public:
-  ClientOSRenderer(bool transparent,
-                   bool show_update_rect);
-  virtual ~ClientOSRenderer();
+  OsrRenderer(bool transparent,
+              bool show_update_rect);
+  virtual ~OsrRenderer();
 
   // Initialize the OpenGL environment.
   void Initialize();
@@ -64,5 +66,7 @@ class ClientOSRenderer {
   CefRect update_rect_;
 };
 
-#endif  // CEF_TESTS_CEFCLIENT_OSRENDERER_H_
+}  // namespace client
+
+#endif  // CEF_TESTS_CEFCLIENT_OSR_RENDERER_H_
 
diff --git a/tests/cefclient/cefclient_osr_widget_gtk.cc b/tests/cefclient/osr_widget_gtk.cc
similarity index 99%
rename from tests/cefclient/cefclient_osr_widget_gtk.cc
rename to tests/cefclient/osr_widget_gtk.cc
index a2b43df37..a4e171648 100644
--- a/tests/cefclient/cefclient_osr_widget_gtk.cc
+++ b/tests/cefclient/osr_widget_gtk.cc
@@ -2,7 +2,7 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#include "cefclient/cefclient_osr_widget_gtk.h"
+#include "cefclient/osr_widget_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gdk/gdkkeysyms.h>
@@ -20,6 +20,8 @@
 #include "include/base/cef_bind.h"
 #include "include/wrapper/cef_closure_task.h"
 
+namespace client {
+
 namespace {
 
 gint glarea_size_allocation(GtkWidget* widget,
@@ -1348,3 +1350,5 @@ void OSRWindow::DisableGL() {
 
   gl_enabled_ = false;
 }
+
+}  // namespace client
diff --git a/tests/cefclient/cefclient_osr_widget_gtk.h b/tests/cefclient/osr_widget_gtk.h
similarity index 92%
rename from tests/cefclient/cefclient_osr_widget_gtk.h
rename to tests/cefclient/osr_widget_gtk.h
index dc7615656..7967d2e15 100644
--- a/tests/cefclient/cefclient_osr_widget_gtk.h
+++ b/tests/cefclient/osr_widget_gtk.h
@@ -2,13 +2,15 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_GTK_H_
-#define CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_GTK_H_
+#ifndef CEF_TESTS_CEFCLIENT_OSR_WIDGET_GTK_H_
+#define CEF_TESTS_CEFCLIENT_OSR_WIDGET_GTK_H_
 #pragma once
 
 #include "include/cef_render_handler.h"
 #include "cefclient/client_handler.h"
-#include "cefclient/osrenderer.h"
+#include "cefclient/osr_renderer.h"
+
+namespace client {
 
 class OSRBrowserProvider {
  public:
@@ -82,7 +84,7 @@ class OSRWindow : public ClientHandler::RenderHandler {
   void EnableGL();
   void DisableGL();
 
-  ClientOSRenderer renderer_;
+  OsrRenderer renderer_;
   OSRBrowserProvider* browser_provider_;
   ClientWindowHandle glarea_;
   bool gl_enabled_;
@@ -93,4 +95,6 @@ class OSRWindow : public ClientHandler::RenderHandler {
   IMPLEMENT_REFCOUNTING(OSRWindow);
 };
 
-#endif  // CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_GTK_H_
+}  // namespace client
+
+#endif  // CEF_TESTS_CEFCLIENT_OSR_WIDGET_GTK_H_
diff --git a/tests/cefclient/cefclient_osr_widget_mac.h b/tests/cefclient/osr_widget_mac.h
similarity index 92%
rename from tests/cefclient/cefclient_osr_widget_mac.h
rename to tests/cefclient/osr_widget_mac.h
index c7a22c851..26529a311 100644
--- a/tests/cefclient/cefclient_osr_widget_mac.h
+++ b/tests/cefclient/osr_widget_mac.h
@@ -2,29 +2,24 @@
 // reserved. Use of this source code is governed by a BSD-style license
 // that can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_MAC_H_
-#define CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_MAC_H_
+#ifndef CEF_TESTS_CEFCLIENT_OSR_WIDGET_MAC_H_
+#define CEF_TESTS_CEFCLIENT_OSR_WIDGET_MAC_H_
 
 #include "include/cef_client.h"
 #include "cefclient/client_handler.h"
 
-class ClientOSRenderer;
-
-class OSRBrowserProvider {
- public:
-  virtual CefRefPtr<CefBrowser> GetBrowser() =0;
-
- protected:
-  virtual ~OSRBrowserProvider() {}
-};
+namespace client {
+class OSRBrowserProvider;
+class OsrRenderer;
+}
 
 // The client OpenGL view.
 @interface ClientOpenGLView
     : NSOpenGLView <NSDraggingSource, NSDraggingDestination> {
 @public
   NSTrackingArea* tracking_area_;
-  OSRBrowserProvider* browser_provider_;
-  ClientOSRenderer* renderer_;
+  client::OSRBrowserProvider* browser_provider_;
+  client::OsrRenderer* renderer_;
   NSPoint last_mouse_pos_;
   NSPoint cur_mouse_pos_;
   bool rotating_;
@@ -55,6 +50,16 @@ class OSRBrowserProvider {
           allowed_ops:(NSDragOperation)ops point:(NSPoint)p;
 @end
 
+namespace client {
+
+class OSRBrowserProvider {
+ public:
+  virtual CefRefPtr<CefBrowser> GetBrowser() =0;
+
+ protected:
+  virtual ~OSRBrowserProvider() {}
+};
+
 // Handler for off-screen rendering windows.
 class ClientOSRHandler : public ClientHandler::RenderHandler {
  public:
@@ -139,5 +144,7 @@ class OSRWindow {
   IMPLEMENT_REFCOUNTING(OSRWindow);
 };
 
-#endif  // CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_MAC_H_
+}  // namespace client
+
+#endif  // CEF_TESTS_CEFCLIENT_OSR_WIDGET_MAC_H_
 
diff --git a/tests/cefclient/cefclient_osr_widget_mac.mm b/tests/cefclient/osr_widget_mac.mm
similarity index 99%
rename from tests/cefclient/cefclient_osr_widget_mac.mm
rename to tests/cefclient/osr_widget_mac.mm
index 3b3850c3f..0a98810ed 100644
--- a/tests/cefclient/cefclient_osr_widget_mac.mm
+++ b/tests/cefclient/osr_widget_mac.mm
@@ -8,7 +8,7 @@
 
 #include <vector>
 
-#include "cefclient/cefclient_osr_widget_mac.h"
+#include "cefclient/osr_widget_mac.h"
 
 #include "include/cef_application_mac.h"
 #include "include/cef_browser.h"
@@ -16,7 +16,7 @@
 #include "include/cef_url.h"
 #include "include/wrapper/cef_helpers.h"
 #include "cefclient/bytes_write_handler.h"
-#include "cefclient/osrenderer.h"
+#include "cefclient/osr_renderer.h"
 #include "cefclient/resource_util.h"
 
 namespace {
@@ -103,6 +103,8 @@ static NSString* const kNSURLTitlePboardType = @"public.url-name";
 
 }  // namespace
 
+namespace client {
+
 ClientOSRHandler::ClientOSRHandler(ClientOpenGLView* view,
                                    OSRBrowserProvider* browser_provider)
     : view_(view),
@@ -298,6 +300,8 @@ void ClientOSRHandler::UpdateDragCursor(CefRefPtr<CefBrowser> browser,
 void ClientOSRHandler::SetLoading(bool isLoading) {
 }
 
+}  // namespace client
+
 @implementation ClientOpenGLView
 
 @synthesize was_last_mouse_down_on_view = was_last_mouse_down_on_view_;
@@ -316,7 +320,7 @@ void ClientOSRHandler::SetLoading(bool isLoading) {
 
   self = [super initWithFrame:frame pixelFormat:pixelFormat];
   if (self) {
-    renderer_ = new ClientOSRenderer(transparency, show_update_rect);
+    renderer_ = new client::OsrRenderer(transparency, show_update_rect);
     rotating_ = false;
     endWheelMonitor_ = nil;
 
@@ -352,7 +356,7 @@ void ClientOSRHandler::SetLoading(bool isLoading) {
 - (void)dealloc {
   CefRefPtr<CefBrowser> browser = [self getBrowser];
   if (browser) {
-    static_cast<ClientOSRHandler*>(
+    static_cast<client::ClientOSRHandler*>(
       browser->GetHost()->GetClient()->GetRenderHandler().get())->Disconnect();
     browser->GetHost()->CloseBrowser(true);
     browser = NULL;
@@ -1221,6 +1225,7 @@ void ClientOSRHandler::SetLoading(bool isLoading) {
 
 @end
 
+namespace client {
 
 CefRefPtr<OSRWindow> OSRWindow::Create(OSRBrowserProvider* browser_provider,
                                        bool transparent,
@@ -1251,3 +1256,5 @@ OSRWindow::OSRWindow(OSRBrowserProvider* browser_provider,
 
 OSRWindow::~OSRWindow() {
 }
+
+}  // namespace client
diff --git a/tests/cefclient/cefclient_osr_widget_win.cc b/tests/cefclient/osr_widget_win.cc
similarity index 86%
rename from tests/cefclient/cefclient_osr_widget_win.cc
rename to tests/cefclient/osr_widget_win.cc
index 04b890f64..35c69e9bb 100644
--- a/tests/cefclient/cefclient_osr_widget_win.cc
+++ b/tests/cefclient/osr_widget_win.cc
@@ -2,7 +2,7 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#include "cefclient/cefclient_osr_widget_win.h"
+#include "cefclient/osr_widget_win.h"
 
 #include <windowsx.h>
 
@@ -10,6 +10,9 @@
 #include "include/base/cef_build.h"
 #include "include/wrapper/cef_closure_task.h"
 #include "cefclient/resource.h"
+#include "cefclient/util_win.h"
+
+namespace client {
 
 namespace {
 
@@ -387,113 +390,6 @@ ATOM OSRWindow::RegisterOSRClass(HINSTANCE hInstance, LPCTSTR className) {
   return RegisterClassEx(&wcex);
 }
 
-bool OSRWindow::isKeyDown(WPARAM wparam) {
-  return (GetKeyState(wparam) & 0x8000) != 0;
-}
-
-int OSRWindow::GetCefMouseModifiers(WPARAM wparam) {
-  int modifiers = 0;
-  if (wparam & MK_CONTROL)
-    modifiers |= EVENTFLAG_CONTROL_DOWN;
-  if (wparam & MK_SHIFT)
-    modifiers |= EVENTFLAG_SHIFT_DOWN;
-  if (isKeyDown(VK_MENU))
-    modifiers |= EVENTFLAG_ALT_DOWN;
-  if (wparam & MK_LBUTTON)
-    modifiers |= EVENTFLAG_LEFT_MOUSE_BUTTON;
-  if (wparam & MK_MBUTTON)
-    modifiers |= EVENTFLAG_MIDDLE_MOUSE_BUTTON;
-  if (wparam & MK_RBUTTON)
-    modifiers |= EVENTFLAG_RIGHT_MOUSE_BUTTON;
-
-  // Low bit set from GetKeyState indicates "toggled".
-  if (::GetKeyState(VK_NUMLOCK) & 1)
-    modifiers |= EVENTFLAG_NUM_LOCK_ON;
-  if (::GetKeyState(VK_CAPITAL) & 1)
-    modifiers |= EVENTFLAG_CAPS_LOCK_ON;
-  return modifiers;
-}
-
-int OSRWindow::GetCefKeyboardModifiers(WPARAM wparam, LPARAM lparam) {
-  int modifiers = 0;
-  if (isKeyDown(VK_SHIFT))
-    modifiers |= EVENTFLAG_SHIFT_DOWN;
-  if (isKeyDown(VK_CONTROL))
-    modifiers |= EVENTFLAG_CONTROL_DOWN;
-  if (isKeyDown(VK_MENU))
-    modifiers |= EVENTFLAG_ALT_DOWN;
-
-  // Low bit set from GetKeyState indicates "toggled".
-  if (::GetKeyState(VK_NUMLOCK) & 1)
-    modifiers |= EVENTFLAG_NUM_LOCK_ON;
-  if (::GetKeyState(VK_CAPITAL) & 1)
-    modifiers |= EVENTFLAG_CAPS_LOCK_ON;
-
-  switch (wparam) {
-  case VK_RETURN:
-    if ((lparam >> 16) & KF_EXTENDED)
-      modifiers |= EVENTFLAG_IS_KEY_PAD;
-    break;
-  case VK_INSERT:
-  case VK_DELETE:
-  case VK_HOME:
-  case VK_END:
-  case VK_PRIOR:
-  case VK_NEXT:
-  case VK_UP:
-  case VK_DOWN:
-  case VK_LEFT:
-  case VK_RIGHT:
-    if (!((lparam >> 16) & KF_EXTENDED))
-      modifiers |= EVENTFLAG_IS_KEY_PAD;
-    break;
-  case VK_NUMLOCK:
-  case VK_NUMPAD0:
-  case VK_NUMPAD1:
-  case VK_NUMPAD2:
-  case VK_NUMPAD3:
-  case VK_NUMPAD4:
-  case VK_NUMPAD5:
-  case VK_NUMPAD6:
-  case VK_NUMPAD7:
-  case VK_NUMPAD8:
-  case VK_NUMPAD9:
-  case VK_DIVIDE:
-  case VK_MULTIPLY:
-  case VK_SUBTRACT:
-  case VK_ADD:
-  case VK_DECIMAL:
-  case VK_CLEAR:
-    modifiers |= EVENTFLAG_IS_KEY_PAD;
-    break;
-  case VK_SHIFT:
-    if (isKeyDown(VK_LSHIFT))
-      modifiers |= EVENTFLAG_IS_LEFT;
-    else if (isKeyDown(VK_RSHIFT))
-      modifiers |= EVENTFLAG_IS_RIGHT;
-    break;
-  case VK_CONTROL:
-    if (isKeyDown(VK_LCONTROL))
-      modifiers |= EVENTFLAG_IS_LEFT;
-    else if (isKeyDown(VK_RCONTROL))
-      modifiers |= EVENTFLAG_IS_RIGHT;
-    break;
-  case VK_MENU:
-    if (isKeyDown(VK_LMENU))
-      modifiers |= EVENTFLAG_IS_LEFT;
-    else if (isKeyDown(VK_RMENU))
-      modifiers |= EVENTFLAG_IS_RIGHT;
-    break;
-  case VK_LWIN:
-    modifiers |= EVENTFLAG_IS_LEFT;
-    break;
-  case VK_RWIN:
-    modifiers |= EVENTFLAG_IS_RIGHT;
-    break;
-  }
-  return modifiers;
-}
-
 bool OSRWindow::IsOverPopupWidget(int x, int y) const {
   const CefRect& rc = renderer_.popup_rect();
   int popup_right = rc.x + rc.width;
@@ -716,8 +612,8 @@ LRESULT CALLBACK OSRWindow::WndProc(HWND hWnd, UINT message,
       mouse_event.modifiers = GetCefMouseModifiers(wParam);
 
       browser->SendMouseWheelEvent(mouse_event,
-                                   isKeyDown(VK_SHIFT) ? delta : 0,
-                                   !isKeyDown(VK_SHIFT) ? delta : 0);
+                                   IsKeyDown(VK_SHIFT) ? delta : 0,
+                                   !IsKeyDown(VK_SHIFT) ? delta : 0);
     }
     break;
 
@@ -781,3 +677,5 @@ LRESULT CALLBACK OSRWindow::WndProc(HWND hWnd, UINT message,
 
   return DefWindowProc(hWnd, message, wParam, lParam);
 }
+
+}  // namespace client
diff --git a/tests/cefclient/cefclient_osr_widget_win.h b/tests/cefclient/osr_widget_win.h
similarity index 89%
rename from tests/cefclient/cefclient_osr_widget_win.h
rename to tests/cefclient/osr_widget_win.h
index ecf54f2db..101dfc81f 100644
--- a/tests/cefclient/cefclient_osr_widget_win.h
+++ b/tests/cefclient/osr_widget_win.h
@@ -2,14 +2,16 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_WIN_H_
-#define CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_WIN_H_
+#ifndef CEF_TESTS_CEFCLIENT_OSR_WIDGET_WIN_H_
+#define CEF_TESTS_CEFCLIENT_OSR_WIDGET_WIN_H_
 #pragma once
 
 #include "include/cef_render_handler.h"
-#include "cefclient/cefclient_osr_dragdrop_win.h"
 #include "cefclient/client_handler.h"
-#include "cefclient/osrenderer.h"
+#include "cefclient/osr_dragdrop_win.h"
+#include "cefclient/osr_renderer.h"
+
+namespace client {
 
 class OSRBrowserProvider {
  public:
@@ -21,7 +23,7 @@ class OSRBrowserProvider {
 
 class OSRWindow : public ClientHandler::RenderHandler
 #if defined(CEF_USE_ATL)
-                  , public DragEvents
+                  , public OsrDragEvents
 #endif
 {
  public:
@@ -81,7 +83,7 @@ class OSRWindow : public ClientHandler::RenderHandler
       CefRenderHandler::DragOperation operation) OVERRIDE;
 
 #if defined(CEF_USE_ATL)
-  // DragEvents methods
+  // OsrDragEvents methods
   CefBrowserHost::DragOperationsMask OnDragEnter(
       CefRefPtr<CefDragData> drag_data,
       CefMouseEvent ev,
@@ -96,9 +98,6 @@ class OSRWindow : public ClientHandler::RenderHandler
   void Invalidate();
   void WasHidden(bool hidden);
 
-  static int GetCefKeyboardModifiers(WPARAM wparam, LPARAM lparam);
-  static int GetCefMouseModifiers(WPARAM wparam);
-
  private:
   OSRWindow(OSRBrowserProvider* browser_provider,
             bool transparent,
@@ -112,13 +111,12 @@ class OSRWindow : public ClientHandler::RenderHandler
   static ATOM RegisterOSRClass(HINSTANCE hInstance, LPCTSTR className);
   static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
                                   LPARAM lParam);
-  static bool isKeyDown(WPARAM wparam);
   bool IsOverPopupWidget(int x, int y) const;
   int GetPopupXOffset() const;
   int GetPopupYOffset() const;
   void ApplyPopupOffset(int& x, int& y) const;
 
-  ClientOSRenderer renderer_;
+  OsrRenderer renderer_;
   OSRBrowserProvider* browser_provider_;
   HWND hWnd_;
   HDC hDC_;
@@ -136,4 +134,6 @@ class OSRWindow : public ClientHandler::RenderHandler
   IMPLEMENT_REFCOUNTING(OSRWindow);
 };
 
-#endif  // CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_WIDGET_WIN_H_
+}  // namespace client
+
+#endif  // CEF_TESTS_CEFCLIENT_OSR_WIDGET_WIN_H_
diff --git a/tests/cefclient/util_win.cc b/tests/cefclient/util_win.cc
index b16b7a387..aa0d49af7 100644
--- a/tests/cefclient/util_win.cc
+++ b/tests/cefclient/util_win.cc
@@ -26,4 +26,111 @@ WNDPROC SetWndProcPtr(HWND hWnd, WNDPROC wndProc) {
   return old;
 }
 
+int GetCefMouseModifiers(WPARAM wparam) {
+  int modifiers = 0;
+  if (wparam & MK_CONTROL)
+    modifiers |= EVENTFLAG_CONTROL_DOWN;
+  if (wparam & MK_SHIFT)
+    modifiers |= EVENTFLAG_SHIFT_DOWN;
+  if (IsKeyDown(VK_MENU))
+    modifiers |= EVENTFLAG_ALT_DOWN;
+  if (wparam & MK_LBUTTON)
+    modifiers |= EVENTFLAG_LEFT_MOUSE_BUTTON;
+  if (wparam & MK_MBUTTON)
+    modifiers |= EVENTFLAG_MIDDLE_MOUSE_BUTTON;
+  if (wparam & MK_RBUTTON)
+    modifiers |= EVENTFLAG_RIGHT_MOUSE_BUTTON;
+
+  // Low bit set from GetKeyState indicates "toggled".
+  if (::GetKeyState(VK_NUMLOCK) & 1)
+    modifiers |= EVENTFLAG_NUM_LOCK_ON;
+  if (::GetKeyState(VK_CAPITAL) & 1)
+    modifiers |= EVENTFLAG_CAPS_LOCK_ON;
+  return modifiers;
+}
+
+int GetCefKeyboardModifiers(WPARAM wparam, LPARAM lparam) {
+  int modifiers = 0;
+  if (IsKeyDown(VK_SHIFT))
+    modifiers |= EVENTFLAG_SHIFT_DOWN;
+  if (IsKeyDown(VK_CONTROL))
+    modifiers |= EVENTFLAG_CONTROL_DOWN;
+  if (IsKeyDown(VK_MENU))
+    modifiers |= EVENTFLAG_ALT_DOWN;
+
+  // Low bit set from GetKeyState indicates "toggled".
+  if (::GetKeyState(VK_NUMLOCK) & 1)
+    modifiers |= EVENTFLAG_NUM_LOCK_ON;
+  if (::GetKeyState(VK_CAPITAL) & 1)
+    modifiers |= EVENTFLAG_CAPS_LOCK_ON;
+
+  switch (wparam) {
+  case VK_RETURN:
+    if ((lparam >> 16) & KF_EXTENDED)
+      modifiers |= EVENTFLAG_IS_KEY_PAD;
+    break;
+  case VK_INSERT:
+  case VK_DELETE:
+  case VK_HOME:
+  case VK_END:
+  case VK_PRIOR:
+  case VK_NEXT:
+  case VK_UP:
+  case VK_DOWN:
+  case VK_LEFT:
+  case VK_RIGHT:
+    if (!((lparam >> 16) & KF_EXTENDED))
+      modifiers |= EVENTFLAG_IS_KEY_PAD;
+    break;
+  case VK_NUMLOCK:
+  case VK_NUMPAD0:
+  case VK_NUMPAD1:
+  case VK_NUMPAD2:
+  case VK_NUMPAD3:
+  case VK_NUMPAD4:
+  case VK_NUMPAD5:
+  case VK_NUMPAD6:
+  case VK_NUMPAD7:
+  case VK_NUMPAD8:
+  case VK_NUMPAD9:
+  case VK_DIVIDE:
+  case VK_MULTIPLY:
+  case VK_SUBTRACT:
+  case VK_ADD:
+  case VK_DECIMAL:
+  case VK_CLEAR:
+    modifiers |= EVENTFLAG_IS_KEY_PAD;
+    break;
+  case VK_SHIFT:
+    if (IsKeyDown(VK_LSHIFT))
+      modifiers |= EVENTFLAG_IS_LEFT;
+    else if (IsKeyDown(VK_RSHIFT))
+      modifiers |= EVENTFLAG_IS_RIGHT;
+    break;
+  case VK_CONTROL:
+    if (IsKeyDown(VK_LCONTROL))
+      modifiers |= EVENTFLAG_IS_LEFT;
+    else if (IsKeyDown(VK_RCONTROL))
+      modifiers |= EVENTFLAG_IS_RIGHT;
+    break;
+  case VK_MENU:
+    if (IsKeyDown(VK_LMENU))
+      modifiers |= EVENTFLAG_IS_LEFT;
+    else if (IsKeyDown(VK_RMENU))
+      modifiers |= EVENTFLAG_IS_RIGHT;
+    break;
+  case VK_LWIN:
+    modifiers |= EVENTFLAG_IS_LEFT;
+    break;
+  case VK_RWIN:
+    modifiers |= EVENTFLAG_IS_RIGHT;
+    break;
+  }
+  return modifiers;
+}
+
+bool IsKeyDown(WPARAM wparam) {
+  return (GetKeyState(wparam) & 0x8000) != 0;
+}
+
 }  // namespace client
diff --git a/tests/cefclient/util_win.h b/tests/cefclient/util_win.h
index ad7415497..0ae37e79b 100644
--- a/tests/cefclient/util_win.h
+++ b/tests/cefclient/util_win.h
@@ -19,4 +19,8 @@ T GetUserDataPtr(HWND hWnd) {
 // Set the window's window procedure pointer and return the old value.
 WNDPROC SetWndProcPtr(HWND hWnd, WNDPROC wndProc);
 
+int GetCefMouseModifiers(WPARAM wparam);
+int GetCefKeyboardModifiers(WPARAM wparam, LPARAM lparam);
+bool IsKeyDown(WPARAM wparam);
+
 }  // namespace client