Simplify accelerated paint and remove windows CanvasSkiaPaint

ui/views/widget/native_widget_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_WIDGET_NATIVE_WIDGET_DELEGATE_H_
 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_
 
 #include <vector>
 
 #include "ui/events/event_constants.h"
@@ skipping 88 matching lines @@
   // maximize.
   virtual void OnNativeWidgetWindowShowStateChanged() = 0;
 
   // Called when the user begins/ends to change the bounds of the window.
   virtual void OnNativeWidgetBeginUserBoundsChange() = 0;
   virtual void OnNativeWidgetEndUserBoundsChange() = 0;
 
   // Returns true if the delegate has a FocusManager.
   virtual bool HasFocusManager() const = 0;
 
-  // Paints the widget using acceleration. If the widget is not using
-  // accelerated painting this returns false and does nothing.
-  virtual bool OnNativeWidgetPaintAccelerated(
-      const gfx::Rect& dirty_region) = 0;
-
   // Paints the rootview in the context. This will also refresh the compositor
   // tree if necessary.
   virtual void OnNativeWidgetPaint(const ui::PaintContext& context) = 0;
 
   // Returns the non-client component (see ui/base/hit_test.h) containing
   // |point|, in client coordinates.
   virtual int GetNonClientComponent(const gfx::Point& point) = 0;
 
   // Mouse and key event handlers.
   virtual void OnKeyEvent(ui::KeyEvent* event) = 0;
@@ skipping 30 matching lines @@
   // later.  Returns true if the initial focus has been set or the window should
   // not set the initial focus, or false if the caller should set the initial
   // focus (if any).
   virtual bool SetInitialFocus(ui::WindowShowState show_state) = 0;
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_