Add support for loading extensions (issue #1947)

- Add CefRequestContext::LoadExtension, CefExtension, CefExtensionHandler and
  related methods/interfaces.
- Add chrome://extensions-support that lists supported Chrome APIs.
- Add CefBrowserHost::SetAutoResizeEnabled and CefDisplayHandler::OnAutoResize
  to support browser resize based on preferred web contents size.
- views: Add support for custom CefMenuButton popups.
- cefclient: Run with `--load-extension=set_page_color` command-line flag for
  an extension loading example. Add `--use-views` on Windows and Linux for an
  even better example.

libcef_dll/cpptoc/views/menu_button_delegate_cpptoc.cc

@@ -9,12 +9,13 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=782642e65456b32ab0fab59db2b9442783b7f574$
+// $hash=ce23c8ba14803b0a15b9b2899632f2c03d6b3a97$
 //
 
 #include "libcef_dll/cpptoc/views/menu_button_delegate_cpptoc.h"
 #include "libcef_dll/ctocpp/views/button_ctocpp.h"
 #include "libcef_dll/ctocpp/views/menu_button_ctocpp.h"
+#include "libcef_dll/ctocpp/views/menu_button_pressed_lock_ctocpp.h"
 #include "libcef_dll/ctocpp/views/view_ctocpp.h"
 
 namespace {
@@ -24,7 +25,8 @@ namespace {
 void CEF_CALLBACK menu_button_delegate_on_menu_button_pressed(
     struct _cef_menu_button_delegate_t* self,
     cef_menu_button_t* menu_button,
-    const cef_point_t* screen_point) {
+    const cef_point_t* screen_point,
+    cef_menu_button_pressed_lock_t* button_pressed_lock) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
   DCHECK(self);
@@ -38,13 +40,18 @@ void CEF_CALLBACK menu_button_delegate_on_menu_button_pressed(
   DCHECK(screen_point);
   if (!screen_point)
     return;
+  // Verify param: button_pressed_lock; type: refptr_diff
+  DCHECK(button_pressed_lock);
+  if (!button_pressed_lock)
+    return;
 
   // Translate param: screen_point; type: simple_byref_const
   CefPoint screen_pointVal = screen_point ? *screen_point : CefPoint();
 
   // Execute
   CefMenuButtonDelegateCppToC::Get(self)->OnMenuButtonPressed(
-      CefMenuButtonCToCpp::Wrap(menu_button), screen_pointVal);
+      CefMenuButtonCToCpp::Wrap(menu_button), screen_pointVal,
+      CefMenuButtonPressedLockCToCpp::Wrap(button_pressed_lock));
 }
 
 void CEF_CALLBACK

libcef_dll/cpptoc/views/menu_button_pressed_lock_cpptoc.cc

@@ -0,0 +1,44 @@
+// Copyright (c) 2017 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+//
+// ---------------------------------------------------------------------------
+//
+// This file was generated by the CEF translator tool. If making changes by
+// hand only do so within the body of existing method and function
+// implementations. See the translator.README.txt file in the tools directory
+// for more information.
+//
+// $hash=dffd7542aef11aa1adb55bd8c5dd6c29081f5caf$
+//
+
+#include "libcef_dll/cpptoc/views/menu_button_pressed_lock_cpptoc.h"
+
+// CONSTRUCTOR - Do not edit by hand.
+
+CefMenuButtonPressedLockCppToC::CefMenuButtonPressedLockCppToC() {}
+
+template <>
+CefRefPtr<CefMenuButtonPressedLock>
+CefCppToCRefCounted<CefMenuButtonPressedLockCppToC,
+                    CefMenuButtonPressedLock,
+                    cef_menu_button_pressed_lock_t>::
+    UnwrapDerived(CefWrapperType type, cef_menu_button_pressed_lock_t* s) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return NULL;
+}
+
+#if DCHECK_IS_ON()
+template <>
+base::AtomicRefCount CefCppToCRefCounted<
+    CefMenuButtonPressedLockCppToC,
+    CefMenuButtonPressedLock,
+    cef_menu_button_pressed_lock_t>::DebugObjCt ATOMIC_DECLARATION;
+#endif
+
+template <>
+CefWrapperType
+    CefCppToCRefCounted<CefMenuButtonPressedLockCppToC,
+                        CefMenuButtonPressedLock,
+                        cef_menu_button_pressed_lock_t>::kWrapperType =
+        WT_MENU_BUTTON_PRESSED_LOCK;

libcef_dll/cpptoc/views/menu_button_pressed_lock_cpptoc.h

@@ -0,0 +1,39 @@
+// Copyright (c) 2017 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+//
+// ---------------------------------------------------------------------------
+//
+// This file was generated by the CEF translator tool. If making changes by
+// hand only do so within the body of existing method and function
+// implementations. See the translator.README.txt file in the tools directory
+// for more information.
+//
+// $hash=5b9354b2db247aaa4a3a6623ebdcb97aef98d0b7$
+//
+
+#ifndef CEF_LIBCEF_DLL_CPPTOC_VIEWS_MENU_BUTTON_PRESSED_LOCK_CPPTOC_H_
+#define CEF_LIBCEF_DLL_CPPTOC_VIEWS_MENU_BUTTON_PRESSED_LOCK_CPPTOC_H_
+#pragma once
+
+#if !defined(BUILDING_CEF_SHARED)
+#error This file can be included DLL-side only
+#endif
+
+#include "include/capi/views/cef_menu_button_capi.h"
+#include "include/capi/views/cef_menu_button_delegate_capi.h"
+#include "include/views/cef_menu_button.h"
+#include "include/views/cef_menu_button_delegate.h"
+#include "libcef_dll/cpptoc/cpptoc_ref_counted.h"
+
+// Wrap a C++ class with a C structure.
+// This class may be instantiated and accessed DLL-side only.
+class CefMenuButtonPressedLockCppToC
+    : public CefCppToCRefCounted<CefMenuButtonPressedLockCppToC,
+                                 CefMenuButtonPressedLock,
+                                 cef_menu_button_pressed_lock_t> {
+ public:
+  CefMenuButtonPressedLockCppToC();
+};
+
+#endif  // CEF_LIBCEF_DLL_CPPTOC_VIEWS_MENU_BUTTON_PRESSED_LOCK_CPPTOC_H_

libcef_dll/cpptoc/views/window_delegate_cpptoc.cc

@@ -9,7 +9,7 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=9cf5d66da05ef9e423995bc8f527ef1315812134$
+// $hash=80a92fb23bc01d46903ea4e2076950a4ffe07b18$
 //
 
 #include "libcef_dll/cpptoc/views/window_delegate_cpptoc.h"
@@ -56,6 +56,51 @@ window_delegate_on_window_destroyed(struct _cef_window_delegate_t* self,
       CefWindowCToCpp::Wrap(window));
 }
 
+cef_window_t* CEF_CALLBACK
+window_delegate_get_parent_window(struct _cef_window_delegate_t* self,
+                                  cef_window_t* window,
+                                  int* is_menu,
+                                  int* can_activate_menu) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return NULL;
+  // Verify param: window; type: refptr_diff
+  DCHECK(window);
+  if (!window)
+    return NULL;
+  // Verify param: is_menu; type: bool_byaddr
+  DCHECK(is_menu);
+  if (!is_menu)
+    return NULL;
+  // Verify param: can_activate_menu; type: bool_byaddr
+  DCHECK(can_activate_menu);
+  if (!can_activate_menu)
+    return NULL;
+
+  // Translate param: is_menu; type: bool_byaddr
+  bool is_menuBool = (is_menu && *is_menu) ? true : false;
+  // Translate param: can_activate_menu; type: bool_byaddr
+  bool can_activate_menuBool =
+      (can_activate_menu && *can_activate_menu) ? true : false;
+
+  // Execute
+  CefRefPtr<CefWindow> _retval =
+      CefWindowDelegateCppToC::Get(self)->GetParentWindow(
+          CefWindowCToCpp::Wrap(window), &is_menuBool, &can_activate_menuBool);
+
+  // Restore param: is_menu; type: bool_byaddr
+  if (is_menu)
+    *is_menu = is_menuBool ? true : false;
+  // Restore param: can_activate_menu; type: bool_byaddr
+  if (can_activate_menu)
+    *can_activate_menu = can_activate_menuBool ? true : false;
+
+  // Return type: refptr_diff
+  return CefWindowCToCpp::Unwrap(_retval);
+}
+
 int CEF_CALLBACK
 window_delegate_is_frameless(struct _cef_window_delegate_t* self,
                              cef_window_t* window) {
@@ -392,6 +437,7 @@ void CEF_CALLBACK window_delegate_on_blur(struct _cef_view_delegate_t* self,
 CefWindowDelegateCppToC::CefWindowDelegateCppToC() {
   GetStruct()->on_window_created = window_delegate_on_window_created;
   GetStruct()->on_window_destroyed = window_delegate_on_window_destroyed;
+  GetStruct()->get_parent_window = window_delegate_get_parent_window;
   GetStruct()->is_frameless = window_delegate_is_frameless;
   GetStruct()->can_resize = window_delegate_can_resize;
   GetStruct()->can_maximize = window_delegate_can_maximize;