Use correct device scale factors in Aura

content/browser/renderer_host/render_widget_host_view_aura.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_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 435 matching lines @@
 
   // Converts |rect| from screen coordinate to window coordinate.
   gfx::Rect ConvertRectFromScreen(const gfx::Rect& rect);
 
   typedef base::Callback<void(bool, const scoped_refptr<ui::Texture>&)>
       BufferPresentedCallback;
 
   // The common entry point for full buffer updates from renderer
   // and GPU process.
   void BuffersSwapped(const gfx::Size& size,
+                      float surface_scale_factor,
                       const std::string& mailbox_name,
                       const BufferPresentedCallback& ack_callback);
 
   bool SwapBuffersPrepare(const gfx::Rect& surface_rect,
+                          float surface_scale_factor,
                           const gfx::Rect& damage_rect,
                           const std::string& mailbox_name,
                           const BufferPresentedCallback& ack_callback);
 
   void SwapBuffersCompleted(
       const BufferPresentedCallback& ack_callback,
       const scoped_refptr<ui::Texture>& texture_to_return);
 
   void SwapDelegatedFrame(
       scoped_ptr<cc::DelegatedFrameData> frame_data,
@@ skipping 91 matching lines @@
   // The damage in the previously presented buffer.
   SkRegion previous_damage_;
 
   // Pending damage from previous frames that we skipped.
   SkRegion skipped_damage_;
 
   // The size of the last frame that was swapped (even if we skipped it).
   // Used to determine when the skipped_damage_ needs to be reset due to
   // size changes between front- and backbuffer.
   gfx::Size last_swapped_surface_size_;
+  float last_swapped_surface_scale_factor_;
 
   int pending_thumbnail_tasks_;
 
   gfx::GLSurfaceHandle shared_surface_handle_;
 
   // If non-NULL we're in OnPaint() and this is the supplied canvas.
   gfx::Canvas* paint_canvas_;
 
   // Used to record the last position of the mouse.
   // While the mouse is locked, they store the last known position just as mouse
@@ skipping 83 matching lines @@
   scoped_ptr<RenderWidgetHostViewFrameSubscriber> frame_subscriber_;
 
   TouchEditingClient* touch_editing_client_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_