[content] Fix background color update handling in RWHVAura.

content/browser/renderer_host/render_widget_host_unittest.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 <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <tuple>
 
@@ skipping 934 matching lines @@
   std::unique_ptr<RenderWidgetHostViewBase> view;
 #if defined(USE_AURA)
   view.reset(new RenderWidgetHostViewAura(host_.get(), false));
   // TODO(derat): Call this on all platforms: http://crbug.com/102450.
   view->InitAsChild(NULL);
 #elif defined(OS_ANDROID)
   view.reset(new RenderWidgetHostViewAndroid(host_.get(), NULL));
 #endif
   host_->SetView(view.get());
 
-  EXPECT_TRUE(view->GetBackgroundOpaque());
+  EXPECT_NE(static_cast<unsigned>(SK_ColorTRANSPARENT),
+            view->background_color());
   view->SetBackgroundColor(SK_ColorTRANSPARENT);
-  EXPECT_FALSE(view->GetBackgroundOpaque());
+  EXPECT_EQ(static_cast<unsigned>(SK_ColorTRANSPARENT),
+            view->background_color());
 
   const IPC::Message* set_background =
       process_->sink().GetUniqueMessageMatching(
           ViewMsg_SetBackgroundOpaque::ID);
   ASSERT_TRUE(set_background);
   std::tuple<bool> sent_background;
   ViewMsg_SetBackgroundOpaque::Read(set_background, &sent_background);
   EXPECT_FALSE(std::get<0>(sent_background));
 
   host_->SetView(NULL);
@@ skipping 1221 matching lines @@
   EXPECT_EQ(0u, host_->processed_frame_messages_count());
 
   frame = MakeCompositorFrame(1.f, frame_size);
   frame.metadata.frame_token = frame_token3;
   host_->SubmitCompositorFrame(local_surface_id, std::move(frame));
   EXPECT_EQ(0u, host_->queued_messages_.size());
   EXPECT_EQ(1u, host_->processed_frame_messages_count());
 }
 
 }  // namespace content