Sets a transparent background for out-of-process subframes.

chromecast/renderer/cast_content_renderer_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromecast/renderer/cast_content_renderer_client.h"
 
 #include <stdint.h>
 #include <sys/sysinfo.h>
 
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chromecast/base/chromecast_switches.h"
 #include "chromecast/crash/cast_crash_keys.h"
 #include "chromecast/media/base/media_caps.h"
 #include "chromecast/renderer/cast_media_load_deferrer.h"
 #include "chromecast/renderer/cast_render_process_observer.h"
 #include "chromecast/renderer/key_systems_cast.h"
 #include "chromecast/renderer/media/chromecast_media_renderer_factory.h"
 #include "components/network_hints/renderer/prescient_networking_dispatcher.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/public/platform/WebColor.h"
+#include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
 #include "third_party/WebKit/public/web/WebView.h"
 
 namespace chromecast {
 namespace shell {
 
 namespace {
 
 #if defined(ARCH_CPU_ARM_FAMILY) && !defined(OS_ANDROID)
 // This memory threshold is set for Chromecast. See the UMA histogram
@@ skipping 101 matching lines @@
   std::string previous_app =
       command_line->GetSwitchValueNative(switches::kPreviousApp);
   if (!previous_app.empty())
     base::debug::SetCrashKeyValue(crash_keys::kPreviousApp, previous_app);
 }
 
 void CastContentRendererClient::RenderViewCreated(
     content::RenderView* render_view) {
   blink::WebView* webview = render_view->GetWebView();
   if (webview) {
-    webview->setBaseBackgroundColor(kColorBlack);
+    blink::WebFrameWidget* web_frame_widget = render_view->GetWebFrameWidget();
+    web_frame_widget->setBaseBackgroundColor(kColorBlack);
 
     // The following settings express consistent behaviors across Cast
     // embedders, though Android has enabled by default for mobile browsers.
     webview->settings()->setShrinksViewportContentToFit(false);
     webview->settings()->setMediaControlsOverlayPlayButtonEnabled(false);
 
     // Scale 1 ensures window.innerHeight/Width match application resolution.
     // PageScaleOverride is the 'user agent' value which overrides page
     // settings (from meta viewport tag) - thus preventing inconsistency
     // between Android and non-Android cast_shell.
@@ skipping 43 matching lines @@
     closure.Run();
     return;
   }
 
   // Lifetime is tied to |render_frame| via content::RenderFrameObserver.
   new CastMediaLoadDeferrer(render_frame, closure);
 }
 
 }  // namespace shell
 }  // namespace chromecast