Add a flag to disable partial raster in renderer

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 <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 80 matching lines @@
   }
 
   bool HasValidTilePriorities() const override {
     return base_client_->HasValidTilePriorities();
   }
 
   bool RequiresHighResToDraw() const override {
     return base_client_->RequiresHighResToDraw();
   }
 
+  bool EnablePartialRaster() const override {
+    return base_client_->EnablePartialRaster();
+  }
+
  private:
   PictureLayerTilingClient* base_client_;
   Region invalidation_;
 };
 
 }  // namespace
 
 RasterizeAndRecordBenchmarkImpl::RasterizeAndRecordBenchmarkImpl(
     scoped_refptr<base::SingleThreadTaskRunner> origin_task_runner,
     base::Value* value,
@@ skipping 104 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