Mac ÜC: Make resize smooth

content/browser/compositor/browser_compositor_view_private_mac.h

 // Copyright 2014 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_COMPOSITOR_BROWSER_COMPOSITOR_VIEW_PRIVATE_MAC_H_
 #define CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_VIEW_PRIVATE_MAC_H_
 
 #include "content/browser/compositor/browser_compositor_view_mac.h"
 
 namespace content {
@@ skipping 26 matching lines @@
 
 // Access the underlying ui::Compositor for this view.
 - (ui::Compositor*)compositor;
 
 // Called when the accelerated or software layer draws its frame to the screen.
 - (void)layerDidDrawFrame;
 
 // Called when an error is encountered while drawing to the screen.
 - (void)gotAcceleratedLayerError;
 
+// Check if a frame of a given size is currently being displayed.
+- (bool)hasFrameWithSizeInDIP:(gfx::Size)desiredSizeInDIP;
+
 @end  // BrowserCompositorViewCocoa
 
 namespace content {
 
 // This class implements the parts of BrowserCompositorViewCocoa that need to
 // be a C++ class and not an Objective C class.
 class BrowserCompositorViewCocoaHelper
     : public content::CompositingIOSurfaceLayerClient {
  public:
   BrowserCompositorViewCocoaHelper(BrowserCompositorViewCocoa* view)
       : view_(view) {}
   virtual ~BrowserCompositorViewCocoaHelper() {}
 
  private:
   // CompositingIOSurfaceLayerClient implementation:
   virtual void AcceleratedLayerDidDrawFrame(bool succeeded) OVERRIDE;
 
   BrowserCompositorViewCocoa* view_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_VIEW_PRIVATE_MAC_H_