[content] Fix background color update handling in RWHVAura.

content/test/test_render_view_host.h

 // 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.
 
 #ifndef CONTENT_TEST_TEST_RENDER_VIEW_HOST_H_
 #define CONTENT_TEST_TEST_RENDER_VIEW_HOST_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 59 matching lines @@
   gfx::NativeView GetNativeView() const override;
   gfx::NativeViewAccessible GetNativeViewAccessible() override;
   ui::TextInputClient* GetTextInputClient() override;
   bool HasFocus() const override;
   void Show() override;
   void Hide() override;
   bool IsShowing() override;
   void WasUnOccluded() override;
   void WasOccluded() override;
   gfx::Rect GetViewBounds() const override;
+  void SetBackgroundColor(SkColor color) override;
+  SkColor background_color() const override;
 #if defined(OS_MACOSX)
   ui::AcceleratedWidgetMac* GetAcceleratedWidgetMac() const override;
   void SetActive(bool active) override;
   void ShowDefinitionForSelection() override {}
   bool SupportsSpeech() const override;
   void SpeakSelection() override;
   bool IsSpeaking() const override;
   void StopSpeaking() override;
 #endif  // defined(OS_MACOSX)
   void DidCreateNewRendererCompositorFrameSink() override;
@@ skipping 32 matching lines @@
 
  protected:
   RenderWidgetHostImpl* rwh_;
   cc::FrameSinkId frame_sink_id_;
 
  private:
   bool is_showing_;
   bool is_occluded_;
   bool did_swap_compositor_frame_;
   bool did_change_compositor_frame_sink_ = false;
+  SkColor background_color_;
   ui::DummyTextInputClient text_input_client_;
 };
 
 #if defined(COMPILER_MSVC)
 // See comment for same warning on RenderViewHostImpl.
 #pragma warning(push)
 #pragma warning(disable: 4250)
 #endif
 
 // TestRenderViewHost ----------------------------------------------------------
@@ skipping 158 matching lines @@
  private:
   typedef std::unique_ptr<ui::test::ScopedSetSupportedScaleFactors>
       ScopedSetSupportedScaleFactors;
   ScopedSetSupportedScaleFactors scoped_set_supported_scale_factors_;
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImplTestHarness);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_RENDER_VIEW_HOST_H_