Mac: Clean up ifdefs in output surface

content/browser/compositor/gpu_browser_compositor_output_surface.h

Index: content/browser/compositor/gpu_browser_compositor_output_surface.h
diff --git a/content/browser/compositor/gpu_browser_compositor_output_surface.h b/content/browser/compositor/gpu_browser_compositor_output_surface.h
index 542f294c2dddc9fdb77b9b23c47da06b460831bc..b96ede400fe6bbea56eeed4e7cf7540346de22f6 100644
--- a/content/browser/compositor/gpu_browser_compositor_output_surface.h
+++ b/content/browser/compositor/gpu_browser_compositor_output_surface.h
@@ -54,24 +54,6 @@ class GpuBrowserCompositorOutputSurface
   // cc::OutputSurface implementation.
   void SwapBuffers(cc::CompositorFrame* frame) override;
   bool BindToClient(cc::OutputSurfaceClient* client) override;
-  bool SurfaceIsSuspendForRecycle() const override;
-
-#if defined(OS_MACOSX)
-  void SetSurfaceSuspendedForRecycle(bool suspended) override;
-  enum ShouldShowFramesState {
-    // Frames that come from the GPU process should appear on-screen.
-    SHOULD_SHOW_FRAMES,
-    // The compositor has been suspended. Any frames that come from the GPU
-    // process are for the pre-suspend content and should not be displayed.
-    SHOULD_NOT_SHOW_FRAMES_SUSPENDED,
-    // The compositor has been un-suspended, but has not yet issued a swap
-    // since being un-suspended, so any frames that come from the GPU process
-    // are for pre-suspend content and should not be displayed.
-    SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED,
-  };
-  ShouldShowFramesState should_show_frames_state_;
-#endif
-
   gpu::CommandBufferProxyImpl* GetCommandBufferProxy();
 
   base::CancelableCallback<void(