[content] Fix background color update handling in RWHVAura.

content/test/test_render_view_host.cc

 // Copyright (c) 2012 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 "content/test/test_render_view_host.h"
 
 #include <memory>
 
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
@@ skipping 40 matching lines @@
   params->gesture = NavigationGestureUser;
   params->was_within_same_page = false;
   params->method = "GET";
   params->page_state = PageState::CreateFromURL(url);
 }
 
 TestRenderWidgetHostView::TestRenderWidgetHostView(RenderWidgetHost* rwh)
     : rwh_(RenderWidgetHostImpl::From(rwh)),
       is_showing_(false),
       is_occluded_(false),
-      did_swap_compositor_frame_(false) {
+      did_swap_compositor_frame_(false),
+      background_color_(SK_ColorWHITE) {
 #if defined(OS_ANDROID)
   frame_sink_id_ = AllocateFrameSinkId();
   GetSurfaceManager()->RegisterFrameSinkId(frame_sink_id_);
 #else
   // Not all tests initialize or need an image transport factory.
   if (ImageTransportFactory::GetInstance()) {
     frame_sink_id_ = AllocateFrameSinkId();
     GetSurfaceManager()->RegisterFrameSinkId(frame_sink_id_);
   }
 #endif
@@ skipping 61 matching lines @@
                                                  int error_code) {
   delete this;
 }
 
 void TestRenderWidgetHostView::Destroy() { delete this; }
 
 gfx::Rect TestRenderWidgetHostView::GetViewBounds() const {
   return gfx::Rect();
 }
 
+void TestRenderWidgetHostView::SetBackgroundColor(SkColor color) {
+  background_color_ = color;
+}
+
+SkColor TestRenderWidgetHostView::background_color() const {
+  return background_color_;
+}
+
 void TestRenderWidgetHostView::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
     const ReadbackRequestCallback& callback,
     const SkColorType preferred_color_type) {
   callback.Run(SkBitmap(), content::READBACK_FAILED);
 }
 
 void TestRenderWidgetHostView::CopyFromCompositingSurfaceToVideoFrame(
     const gfx::Rect& src_subrect,
@@ skipping 174 matching lines @@
 
 TestRenderFrameHost* RenderViewHostImplTestHarness::main_test_rfh() {
   return contents()->GetMainFrame();
 }
 
 TestWebContents* RenderViewHostImplTestHarness::contents() {
   return static_cast<TestWebContents*>(web_contents());
 }
 
 }  // namespace content