gpu: Remove Echo and SwapCompletion GL interfacess

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 1349053e920bad85ef3da1d6c781edbb4da46bf3..25be0b2a0851c6bfb1bb89a20d20772e78056872 100644
--- a/cc/test/test_context_support.h
+++ b/cc/test/test_context_support.h
@@ -23,12 +23,8 @@ class TestContextSupport : public gpu::ContextSupport {
   virtual void SignalQuery(uint32 query,
                            const base::Closure& callback) OVERRIDE;
   virtual void SetSurfaceVisible(bool visible) OVERRIDE;
-  virtual void Swap() OVERRIDE;
-  virtual void PartialSwapBuffers(const gfx::Rect& sub_buffer) OVERRIDE;
   virtual uint32 InsertFutureSyncPointCHROMIUM() OVERRIDE;
   virtual void RetireSyncPointCHROMIUM(uint32 sync_point) OVERRIDE;
-  virtual void SetSwapBuffersCompleteCallback(
-      const base::Closure& callback) OVERRIDE;
   virtual void ScheduleOverlayPlane(int plane_z_order,
                                     gfx::OverlayTransform plane_transform,
                                     unsigned overlay_texture_id,
@@ -50,29 +46,11 @@ class TestContextSupport : public gpu::ContextSupport {
   void SetScheduleOverlayPlaneCallback(
       const ScheduleOverlayPlaneCallback& schedule_overlay_plane_callback);
 
-  enum SwapType {
-    NO_SWAP,
-    SWAP,
-    PARTIAL_SWAP
-  };
-
-  SwapType last_swap_type() const { return last_swap_type_; }
-  gfx::Rect last_partial_swap_rect() const {
-    return last_partial_swap_rect_;
-  }
-
  private:
-  void OnSwapBuffersComplete();
-
   std::vector<base::Closure> sync_point_callbacks_;
   SurfaceVisibleCallback set_visible_callback_;
   ScheduleOverlayPlaneCallback schedule_overlay_plane_callback_;
 
-  base::Closure swap_buffers_complete_callback_;
-
-  SwapType last_swap_type_;
-  gfx::Rect last_partial_swap_rect_;
-
   base::WeakPtrFactory<TestContextSupport> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TestContextSupport);