Standardize usage of virtual/override/final in cc/

cc/output/software_renderer_unittest.cc

 // Copyright 2012 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/output/software_renderer.h"
 
 #include "base/run_loop.h"
 #include "cc/output/compositor_frame_metadata.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
@@ skipping 37 matching lines @@
         this, &settings_, output_surface_.get(), resource_provider());
   }
 
   ResourceProvider* resource_provider() const {
     return resource_provider_.get();
   }
 
   SoftwareRenderer* renderer() const { return renderer_.get(); }
 
   // RendererClient implementation.
-  virtual void SetFullRootLayerDamage() override {}
+  void SetFullRootLayerDamage() override {}
 
   scoped_ptr<SkBitmap> DrawAndCopyOutput(RenderPassList* list,
                                          float device_scale_factor,
                                          gfx::Rect device_viewport_rect) {
     scoped_ptr<SkBitmap> bitmap_result;
     base::RunLoop loop;
 
     list->back()->copy_requests.push_back(
         CopyOutputRequest::CreateBitmapRequest(
             base::Bind(&SoftwareRendererTest::SaveBitmapResult,
@@ skipping 363 matching lines @@
   EXPECT_EQ(
       SK_ColorMAGENTA,
       output->getColor(interior_visible_rect.x(), interior_visible_rect.y()));
   EXPECT_EQ(SK_ColorMAGENTA,
             output->getColor(interior_visible_rect.right() - 1,
                              interior_visible_rect.bottom() - 1));
 }
 
 }  // namespace
 }  // namespace cc