diff --git a/tests/cefclient/browser/root_window_manager.cc b/tests/cefclient/browser/root_window_manager.cc
index cf03ab44e..abe7b1338 100644
--- a/tests/cefclient/browser/root_window_manager.cc
+++ b/tests/cefclient/browser/root_window_manager.cc
@@ -107,8 +107,7 @@ class ClientRequestContextHandler : public CefRequestContextHandler,
 }  // namespace
 
 RootWindowManager::RootWindowManager(bool terminate_when_all_windows_closed)
-    : terminate_when_all_windows_closed_(terminate_when_all_windows_closed),
-      image_cache_(new ImageCache) {
+    : terminate_when_all_windows_closed_(terminate_when_all_windows_closed) {
   CefRefPtr<CefCommandLine> command_line =
       CefCommandLine::GetGlobalCommandLine();
   DCHECK(command_line.get());
@@ -354,8 +353,11 @@ CefRefPtr<CefRequestContext> RootWindowManager::GetRequestContext(
 }
 
 scoped_refptr<ImageCache> RootWindowManager::GetImageCache() {
-  REQUIRE_MAIN_THREAD();
+  CEF_REQUIRE_UI_THREAD();
 
+  if (!image_cache_) {
+    image_cache_ = new ImageCache;
+  }
   return image_cache_;
 }
 
@@ -446,6 +448,10 @@ void RootWindowManager::CleanupOnUIThread() {
     temp_window_.reset(nullptr);
   }
 
+  if (image_cache_) {
+    image_cache_ = nullptr;
+  }
+
   // Quit the main message loop.
   MainMessageLoop::Get()->Quit();
 }
diff --git a/tests/cefclient/browser/root_window_views.cc b/tests/cefclient/browser/root_window_views.cc
index f0800ff88..7023a37a8 100644
--- a/tests/cefclient/browser/root_window_views.cc
+++ b/tests/cefclient/browser/root_window_views.cc
@@ -59,8 +59,8 @@ void RootWindowViews::Init(RootWindow::Delegate* delegate,
   CreateClientHandler(config.url);
   initialized_ = true;
 
-  // Continue initialization on the main thread.
-  InitOnMainThread(settings, config.url);
+  // Continue initialization on the UI thread.
+  InitOnUIThread(settings, config.url, delegate_->GetRequestContext(this));
 }
 
 void RootWindowViews::InitAsPopup(RootWindow::Delegate* delegate,
@@ -187,17 +187,17 @@ ClientWindowHandle RootWindowViews::GetWindowHandle() const {
 }
 
 bool RootWindowViews::WithExtension() const {
-  REQUIRE_MAIN_THREAD();
+  DCHECK(initialized_);
   return with_extension_;
 }
 
 bool RootWindowViews::WithControls() {
-  CEF_REQUIRE_UI_THREAD();
+  DCHECK(initialized_);
   return with_controls_;
 }
 
 bool RootWindowViews::WithExtension() {
-  REQUIRE_MAIN_THREAD();
+  DCHECK(initialized_);
   return with_extension_;
 }
 
@@ -475,12 +475,14 @@ void RootWindowViews::CreateClientHandler(const std::string& url) {
   client_handler_->set_download_favicon_images(true);
 }
 
-void RootWindowViews::InitOnMainThread(const CefBrowserSettings& settings,
-                                       const std::string& startup_url) {
-  if (!CURRENTLY_ON_MAIN_THREAD()) {
-    // Execute this method on the main thread.
-    MAIN_POST_CLOSURE(base::Bind(&RootWindowViews::InitOnMainThread, this,
-                                 settings, startup_url));
+void RootWindowViews::InitOnUIThread(
+    const CefBrowserSettings& settings,
+    const std::string& startup_url,
+    CefRefPtr<CefRequestContext> request_context) {
+  if (!CefCurrentlyOn(TID_UI)) {
+    // Execute this method on the UI thread.
+    CefPostTask(TID_UI, base::Bind(&RootWindowViews::InitOnUIThread, this,
+                                   settings, startup_url, request_context));
     return;
   }
 
@@ -493,7 +495,7 @@ void RootWindowViews::InitOnMainThread(const CefBrowserSettings& settings,
 
   image_cache_->LoadImages(
       image_set, base::Bind(&RootWindowViews::CreateViewsWindow, this, settings,
-                            startup_url, delegate_->GetRequestContext(this)));
+                            startup_url, request_context));
 }
 
 void RootWindowViews::CreateViewsWindow(
diff --git a/tests/cefclient/browser/root_window_views.h b/tests/cefclient/browser/root_window_views.h
index 5cce3ca10..1c719c426 100644
--- a/tests/cefclient/browser/root_window_views.h
+++ b/tests/cefclient/browser/root_window_views.h
@@ -89,8 +89,9 @@ class RootWindowViews : public RootWindow,
  private:
   void CreateClientHandler(const std::string& url);
 
-  void InitOnMainThread(const CefBrowserSettings& settings,
-                        const std::string& startup_url);
+  void InitOnUIThread(const CefBrowserSettings& settings,
+                      const std::string& startup_url,
+                      CefRefPtr<CefRequestContext> request_context);
   void CreateViewsWindow(const CefBrowserSettings& settings,
                          const std::string& startup_url,
                          CefRefPtr<CefRequestContext> request_context,