ui: Introduce CanvasPainter, remove PaintContext(gfx::Canvas*).

ui/views/win/hwnd_message_handler_delegate.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 UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_
 
 #include "ui/views/views_export.h"
 
 namespace gfx {
@@ skipping 56 matching lines @@
   // Returns the minimum and maximum size the window can be resized to by the
   // user.
   virtual void GetMinMaxSize(gfx::Size* min_size,
                              gfx::Size* max_size) const = 0;
 
   // Returns the current size of the RootView.
   virtual gfx::Size GetRootViewSize() const = 0;
 
   virtual void ResetWindowControls() = 0;
 
-  virtual void PaintLayeredWindow(gfx::Canvas* canvas) = 0;
-
   virtual InputMethod* GetInputMethod() = 0;
 
   virtual gfx::NativeViewAccessible GetNativeViewAccessible() = 0;
 
   // Returns true if the window should handle standard system commands, such as
   // close, minimize, maximize.
   // TODO(benwells): Remove this once bubbles don't have two widgets
   // implementing them on non-aura windows. http://crbug.com/189112.
   virtual bool ShouldHandleSystemCommands() const = 0;
 
@@ skipping 139 matching lines @@
   // Called when the window size is about to change.
   virtual void HandleWindowSizeChanging() = 0;
 
  protected:
   virtual ~HWNDMessageHandlerDelegate() {}
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_