cc: Fix const value pattern by replacing it by non-const or reference.

cc/debug/rasterize_and_record_benchmark_impl.cc

 // Copyright 2013 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/debug/rasterize_and_record_benchmark_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 52 matching lines @@
     if (duration < *min_time)
       *min_time = duration;
   }
 }
 
 class FixedInvalidationPictureLayerTilingClient
     : public PictureLayerTilingClient {
  public:
   FixedInvalidationPictureLayerTilingClient(
       PictureLayerTilingClient* base_client,
-      const Region invalidation)
+      const Region& invalidation)
       : base_client_(base_client), invalidation_(invalidation) {}
 
   std::unique_ptr<Tile> CreateTile(const Tile::CreateInfo& info) override {
     return base_client_->CreateTile(info);
   }
 
   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override {
     return base_client_->CalculateTileSize(content_bounds);
   }
 
@@ skipping 133 matching lines @@
       total_memory_usage(0),
       total_layers(0),
       total_picture_layers(0),
       total_picture_layers_with_no_content(0),
       total_picture_layers_off_screen(0) {
 }
 
 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 
 }  // namespace cc