Update from https://crrev.com/304418

cc/output/overlay_unittest.cc

 // 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.
 
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/output_surface.h"
 #include "cc/output/output_surface_client.h"
 #include "cc/output/overlay_candidate_validator.h"
 #include "cc/output/overlay_processor.h"
@@ skipping 521 matching lines @@
                    output_surface,
                    resource_provider,
                    NULL,
                    0),
         expect_overlays_(false) {}
 
   MOCK_METHOD2(DoDrawQuad, void(DrawingFrame* frame, const DrawQuad* quad));
 
   using GLRenderer::BeginDrawingFrame;
 
-  virtual void FinishDrawingFrame(DrawingFrame* frame) override {
+  void FinishDrawingFrame(DrawingFrame* frame) override {
     GLRenderer::FinishDrawingFrame(frame);
 
     if (!expect_overlays_) {
       EXPECT_EQ(0U, frame->overlay_list.size());
       return;
     }
 
     ASSERT_EQ(2U, frame->overlay_list.size());
     EXPECT_NE(0U, frame->overlay_list.back().resource_id);
   }
@@ skipping 252 matching lines @@
   renderer_->BeginDrawingFrame(&frame3);
   renderer_->FinishDrawingFrame(&frame3);
   EXPECT_TRUE(resource_provider_->InUseByConsumer(resource1));
   SwapBuffers();
   EXPECT_FALSE(resource_provider_->InUseByConsumer(resource1));
   Mock::VerifyAndClearExpectations(&scheduler_);
 }
 
 }  // namespace
 }  // namespace cc