Mac: Fix bad framerate when capturing tab

content/browser/renderer_host/compositing_iosurface_context_mac.h

Index: content/browser/renderer_host/compositing_iosurface_context_mac.h
diff --git a/content/browser/renderer_host/compositing_iosurface_context_mac.h b/content/browser/renderer_host/compositing_iosurface_context_mac.h
index 52a9898929375d32a9e66a2c71b66afc5df1c739..316940169fc791fd2c3eb2abbf818839549fd85c 100644
--- a/content/browser/renderer_host/compositing_iosurface_context_mac.h
+++ b/content/browser/renderer_host/compositing_iosurface_context_mac.h
@@ -50,7 +50,6 @@ class CompositingIOSurfaceContext
     return shader_program_cache_.get();
   }
   CGLContextObj cgl_context() const { return cgl_context_; }
-  bool is_vsync_disabled() const { return is_vsync_disabled_; }
   int window_number() const { return window_number_; }
 
   // content::GpuDataManagerObserver implementation.
@@ -63,7 +62,6 @@ class CompositingIOSurfaceContext
       int window_number,
       base::ScopedTypeRef<CGLContextObj> clg_context_strong,
       CGLContextObj clg_context,
-      bool is_vsync_disabled_,
       scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache);
   virtual ~CompositingIOSurfaceContext();
 
@@ -72,7 +70,6 @@ class CompositingIOSurfaceContext
   // Weak, backed by |cgl_context_strong_|.
   CGLContextObj cgl_context_;
 
-  bool is_vsync_disabled_;
   scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache_;
   bool poisoned_;