Cleanup SurfaceVisibility code.

cc/test/test_context_support.h

Index: cc/test/test_context_support.h
diff --git a/cc/test/test_context_support.h b/cc/test/test_context_support.h
index 143a3b3c673a906c274d6a62f87e4fcde46793ed..919a6666dc2c4a7efa06256276a62691d56ad399 100644
--- a/cc/test/test_context_support.h
+++ b/cc/test/test_context_support.h
@@ -28,7 +28,6 @@ class TestContextSupport : public gpu::ContextSupport {
   void SignalSyncToken(const gpu::SyncToken& sync_token,
                        const base::Closure& callback) override;
   void SignalQuery(uint32 query, const base::Closure& callback) override;
-  void SetSurfaceVisible(bool visible) override;
   void SetAggressivelyFreeResources(bool aggressively_free_resources) override;
   void Swap() override;
   void PartialSwapBuffers(const gfx::Rect& sub_buffer) override;
@@ -43,10 +42,6 @@ class TestContextSupport : public gpu::ContextSupport {
 
   void CallAllSyncPointCallbacks();
 
-  typedef base::Callback<void(bool visible)> SurfaceVisibleCallback;
-  void SetSurfaceVisibleCallback(
-      const SurfaceVisibleCallback& set_visible_callback);
-
   typedef base::Callback<void(int plane_z_order,
                               gfx::OverlayTransform plane_transform,
                               unsigned overlay_texture_id,
@@ -64,7 +59,6 @@ class TestContextSupport : public gpu::ContextSupport {
 
  private:
   std::vector<base::Closure> sync_point_callbacks_;
-  SurfaceVisibleCallback set_visible_callback_;
   ScheduleOverlayPlaneCallback schedule_overlay_plane_callback_;
   bool out_of_order_callbacks_;