Enhance chrome.app.window API with window background color

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 415 matching lines @@
   }
 
   // Whether forwarded WebInputEvents should be dropped.
   bool ShouldDropInputEvents() const;
 
   bool has_touch_handler() const { return has_touch_handler_; }
 
   // Set the RenderView background transparency.
   void SetBackgroundOpaque(bool opaque);
 
+  // Set background color.
+  void SetBaseBackgroundColor(SkColor);
+
   // Executes the edit command.
   void ExecuteEditCommand(const std::string& command,
                           const std::string& value);
 
   // Tells the renderer to scroll the currently focused node into rect only if
   // the currently focused node is a Text node (textfield, text area or content
   // editable divs).
   void ScrollFocusedEditableNodeIntoRect(const gfx::Rect& rect);
 
   // Requests the renderer to move the caret selection towards the point.
@@ skipping 448 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_