cc: Changed total_pixels_rasterized to be a return value

cc/resources/tile_manager.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/resources/tile_manager.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
@@ skipping 966 matching lines @@
   DCHECK(buffer);
 
   SkBitmap bitmap;
   bitmap.setConfig(SkBitmap::kARGB_8888_Config, rect.width(), rect.height());
   bitmap.setPixels(buffer);
   SkDevice device(bitmap);
   SkCanvas canvas(&device);
 
   base::TimeTicks start_time = stats_instrumentation->StartRecording();
 
-  int64 total_pixels_rasterized = 0;
-  picture_pile->Raster(&canvas, rect, contents_scale,
-                       &total_pixels_rasterized);
+  int64 total_pixels_rasterized =
+      picture_pile->Raster(&canvas, rect, contents_scale);
 
   base::TimeDelta duration = stats_instrumentation->EndRecording(start_time);
 
   if (stats_instrumentation->record_rendering_stats()) {
     stats_instrumentation->AddRaster(duration,
                                      total_pixels_rasterized,
                                      metadata.is_tile_in_pending_tree_now_bin);
 
     UMA_HISTOGRAM_CUSTOM_COUNTS("Renderer4.PictureRasterTimeMS",
                                 duration.InMilliseconds(),
@@ skipping 90 matching lines @@
     skia::LazyPixelRef* pixel_ref,
     RenderingStatsInstrumentation* stats_instrumentation) {
   TRACE_EVENT0("cc", "TileManager::RunImageDecodeTask");
   base::TimeTicks start_time = stats_instrumentation->StartRecording();
   pixel_ref->Decode();
   base::TimeDelta duration = stats_instrumentation->EndRecording(start_time);
   stats_instrumentation->AddDeferredImageDecode(duration);
 }
 
 }  // namespace cc