Chromecast: pages default to having a black background.

chromecast/shell/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/shell/renderer/cast_content_renderer_client.h"
 
 #include <sys/sysinfo.h>
 
 #include "base/command_line.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "content/public/common/content_switches.h"
+#include "content/public/renderer/render_view.h"
 #include "crypto/nss_util.h"
+#include "third_party/WebKit/public/platform/WebColor.h"
+#include "third_party/WebKit/public/web/WebView.h"
 
 namespace chromecast {
 namespace shell {
 
+namespace {
+
+// Default background color to set for WebViews
+const blink::WebColor kColorBlack = 0x000000FF;
+
+}  // namespace
+
 void CastContentRendererClient::RenderThreadStarted() {
 #if defined(USE_NSS)
   // Note: Copied from chrome_render_process_observer.cc to fix b/8676652.
   //
   // On platforms where the system NSS shared libraries are used,
   // initialize NSS now because it won't be able to load the .so's
   // after entering the sandbox.
   if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess))
     crypto::InitNSSSafely();
 #endif
 }
 
+void CastContentRendererClient::RenderViewCreated(
+    content::RenderView* render_view) {
+  blink::WebView* webview = render_view->GetWebView();
+  if (webview) {
+    webview->setBaseBackgroundColor(kColorBlack);
+  }
+}
+
 void CastContentRendererClient::AddKeySystems(
     std::vector<content::KeySystemInfo>* key_systems) {
 }
 
 }  // namespace shell
 }  // namespace chromecast