cc: Report only on active tiles in tracing.

cc/resources/tile.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.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event_argument.h"
 #include "cc/base/math_util.h"
@@ skipping 44 matching lines @@
 }
 
 void Tile::MarkRequiredForActivation() {
   if (priority_[PENDING_TREE].required_for_activation)
     return;
 
   priority_[PENDING_TREE].required_for_activation = true;
   tile_manager_->DidChangeTilePriority(this);
 }
 
-void Tile::AsValueInto(base::debug::TracedValue* res) const {
+void Tile::AsValueInto(base::debug::TracedValue* res, bool is_active) const {
   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
       TRACE_DISABLED_BY_DEFAULT("cc.debug"), res, "cc::Tile", this);
   TracedValue::SetIDRef(picture_pile_.get(), res, "picture_pile");
   res->SetDouble("contents_scale", contents_scale_);
+  res->SetBoolean("is_active_tile", is_active);
 
   res->BeginArray("content_rect");
   MathUtil::AddToTracedValue(content_rect_, res);
   res->EndArray();
 
   res->SetInteger("layer_id", layer_id_);
 
   res->BeginDictionary("active_priority");
   priority_[ACTIVE_TREE].AsValueInto(res);
   res->EndDictionary();
@@ skipping 37 matching lines @@
 
 bool Tile::HasRasterTask() const {
   for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
     if (managed_state_.tile_versions[mode].raster_task_)
       return true;
   }
   return false;
 }
 
 }  // namespace cc