Simplify accelerated paint and remove windows CanvasSkiaPaint

ui/views/win/hwnd_message_handler_delegate.h

Index: ui/views/win/hwnd_message_handler_delegate.h
diff --git a/ui/views/win/hwnd_message_handler_delegate.h b/ui/views/win/hwnd_message_handler_delegate.h
index 9a2e688acd1936343083fa9e5dd27dbde0d8546e..eda75f331b42bf05db0bbf24918cf6f6908e5ffb 100644
--- a/ui/views/win/hwnd_message_handler_delegate.h
+++ b/ui/views/win/hwnd_message_handler_delegate.h
@@ -193,12 +193,8 @@ class VIEWS_EXPORT HWNDMessageHandlerDelegate {
   virtual void HandleInputLanguageChange(DWORD character_set,
                                          HKL input_language_id) = 0;
 
-  // Called to compel the delegate to paint |invalid_rect| accelerated. Returns
-  // true if accelerated painting was performed.
-  virtual bool HandlePaintAccelerated(const gfx::Rect& invalid_rect) = 0;
-
-  // Called to compel the delegate to paint using the software path.
-  virtual void HandlePaint(gfx::Canvas* canvas) = 0;
+  // Called to compel the delegate to paint |invalid_rect| accelerated.
+  virtual void HandlePaintAccelerated(const gfx::Rect& invalid_rect) = 0;
 
   // Called to forward a WM_NOTIFY message to the tooltip manager.
   virtual bool HandleTooltipNotify(int w_param,