cc: Add more traces to the activation path.

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 <limits>
 #include <string>
 
@@ skipping 520 matching lines @@
       tile_version.set_rasterize_on_demand();
       client_->NotifyTileStateChanged(tile);
     }
   }
 
   DCHECK(IsReadyToActivate());
   ready_to_activate_check_notifier_.Schedule();
 }
 
 void TileManager::DidFinishRunningTasksRequiredForActivation() {
+  TRACE_EVENT1("cc",
+               "TileManager::DidFinishRunningTasksRequiredForActivation",
+               "all_tiles_required_for_activation_have_memory",
+               all_tiles_required_for_activation_have_memory_);
   // This is only a true indication that all tiles required for
   // activation are initialized when no tiles are OOM. We need to
   // wait for DidFinishRunningTasks() to be called, try to re-assign
   // memory and in worst case use on-demand raster when tiles
   // required for activation are OOM.
   if (!all_tiles_required_for_activation_have_memory_)
     return;
 
   ready_to_activate_check_notifier_.Schedule();
 }
@@ skipping 618 matching lines @@
   TRACE_EVENT0("cc", "TileManager::CheckIfReadyToActivate");
 
   rasterizer_->CheckForCompletedTasks();
   did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
 
   if (IsReadyToActivate())
     client_->NotifyReadyToActivate();
 }
 
 }  // namespace cc