Tag TransportDIBs with the device scale factor they expect.

content/browser/renderer_host/render_widget_host_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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #pragma once
 
 #include <deque>
 #include <string>
@@ skipping 519 matching lines @@
                              const base::TimeTicks& paint_start);
 
   // Paints the given bitmap to the current backing store at the given
   // location.  Returns true if the passed callback was asynchronously
   // scheduled in the future (and thus the caller must manually synchronously
   // call the callback function).
   bool PaintBackingStoreRect(TransportDIB::Id bitmap,
                              const gfx::Rect& bitmap_rect,
                              const std::vector<gfx::Rect>& copy_rects,
                              const gfx::Size& view_size,
+                             float scale_factor,
                              const base::Closure& completion_callback);
 
   // Scrolls the given |clip_rect| in the backing by the given dx/dy amount. The
   // |dib| and its corresponding location |bitmap_rect| in the backing store
   // is the newly painted pixels by the renderer.
   void ScrollBackingStoreRect(int dx, int dy, const gfx::Rect& clip_rect,
                               const gfx::Size& view_size);
 
   // Called by OnMsgInputEventAck() to process a keyboard event ack message.
   void ProcessKeyboardEventAck(int type, bool processed);
@@ skipping 193 matching lines @@
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   scoped_ptr<TapSuppressionController> tap_suppression_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_