Remove RenderWidget::SetBackground, change IPC to pass a bool.

content/browser/renderer_host/render_widget_host_view_aura.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/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 753 matching lines @@
 }
 
 gfx::Rect RenderWidgetHostViewAura::GetViewBounds() const {
   // This is the size that we want the renderer to produce. While we're waiting
   // for the correct frame (i.e. during a resize), don't change the size so that
   // we don't pipeline more resizes than we can handle.
   gfx::Rect bounds(window_->GetBoundsInScreen());
   return delegated_frame_host_->GetViewBoundsWithResizeLock(bounds);
 }
 
-void RenderWidgetHostViewAura::SetBackground(const SkBitmap& background) {
-  RenderWidgetHostViewBase::SetBackground(background);
-  host_->SetBackground(background);
-  window_->layer()->SetFillsBoundsOpaquely(background.isOpaque());
+void RenderWidgetHostViewAura::SetBackgroundOpaque(bool opaque) {
+  RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
+  host_->SetBackgroundOpaque(opaque);
+  window_->layer()->SetFillsBoundsOpaquely(opaque);
 }
 
 gfx::Size RenderWidgetHostViewAura::GetVisibleViewportSize() const {
   gfx::Rect window_bounds = window_->bounds();
   int viewport_width = std::max(
       0, window_bounds.width() - insets_.left() - insets_.right());
   int viewport_height = std::max(
       0, window_bounds.height() - insets_.top() - insets_.bottom());
   return gfx::Size(viewport_width, viewport_height);
 }
@@ skipping 1590 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content