Part 3/3 (RWH/IOSurface) of adding with device scale factor to transport surfaces

content/browser/renderer_host/render_widget_host_view_mac.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_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <list>
 #include <map>
@@ skipping 307 matching lines @@
   void SetTextInputActive(bool active);
 
   // Sends completed plugin IME notification and text back to the renderer.
   void PluginImeCompositionCompleted(const string16& text, int plugin_id);
 
   const std::string& selected_text() const { return selected_text_; }
 
   // Call setNeedsDisplay on the cocoa_view_. The IOSurface will be drawn during
   // the next drawRect. Return true if the Ack should be sent, false if it
   // should be deferred until drawRect.
-  bool CompositorSwapBuffers(uint64 surface_handle, const gfx::Size& size);
+  bool CompositorSwapBuffers(
+      uint64 surface_handle, const gfx::Size& size, float scale_factor);
   // Ack pending SwapBuffers requests, if any, to unblock the GPU process. Has
   // no effect if there are no pending requests.
   void AckPendingSwapBuffers();
 
   // Returns true and stores first rectangle for character range if the
   // requested |range| is already cached, otherwise returns false.
   // Exposed for testing.
   CONTENT_EXPORT bool GetCachedFirstRectForCharacterRange(
       NSRange range, NSRect* rect, NSRange* actual_range);
 
@@ skipping 152 matching lines @@
 
   // Subscriber that listens to frame presentation events.
   scoped_ptr<RenderWidgetHostViewFrameSubscriber> frame_subscriber_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_