cc: Record statistics about approximated content.

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 843 matching lines @@
 
         AppendQuadsForLayer(target_render_pass,
                             *it,
                             occlusion_tracker,
                             &append_quads_data);
       }
 
       ++layers_drawn;
     }
 
+    rendering_stats_instrumentation_->AddVisibleContentArea(
+        append_quads_data.visible_content_area);
+    rendering_stats_instrumentation_->AddApproximatedVisibleContentArea(
+        append_quads_data.approximated_visible_content_area);
+
     if (append_quads_data.num_missing_tiles) {
       bool layer_has_animating_transform =
           it->screen_space_transform_is_animating() ||
           it->draw_transform_is_animating();
       if (layer_has_animating_transform) {
         draw_result =
             DrawSwapReadbackResult::DRAW_ABORTED_CHECKERBOARD_ANIMATIONS;
       }
     }
 
@@ skipping 2183 matching lines @@
   swap_promise_monitor_.erase(monitor);
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfSetNeedsRedraw() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 }  // namespace cc