Add SetScale to PPB_WidgetDev, use scale for painting

webkit/plugins/ppapi/ppb_widget_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 WEBKIT_PLUGINS_PPAPI_PPB_WIDGET_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_WIDGET_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ppapi/c/pp_rect.h"
@@ skipping 19 matching lines @@
   virtual ~PPB_Widget_Impl();
 
   // Resource overrides.
   virtual ::ppapi::thunk::PPB_Widget_API* AsPPB_Widget_API() OVERRIDE;
 
   // PPB_WidgetAPI implementation.
   virtual PP_Bool Paint(const PP_Rect* rect, PP_Resource ) OVERRIDE;
   virtual PP_Bool HandleEvent(PP_Resource pp_input_event) OVERRIDE;
   virtual PP_Bool GetLocation(PP_Rect* location) OVERRIDE;
   virtual void SetLocation(const PP_Rect* location) OVERRIDE;
+  virtual void SetScale(float scale) OVERRIDE;
 
   // Notifies the plugin instance that the given rect needs to be repainted.
   void Invalidate(const PP_Rect* dirty);
 
  protected:
   virtual PP_Bool PaintInternal(const gfx::Rect& rect,
                                 PPB_ImageData_Impl* image) = 0;
   virtual PP_Bool HandleEventInternal(const ::ppapi::InputEventData& data) = 0;
   virtual void SetLocationInternal(const PP_Rect* location) = 0;
 
   PP_Rect location() const { return location_; }
+  float scale() const { return scale_; }
 
  private:
   PP_Rect location_;
+  float scale_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Widget_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_WIDGET_IMPL_H_