cc: refactor of MathUtil::AddToTracedValue

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 37 matching lines @@
       TRACE_DISABLED_BY_DEFAULT("cc.debug"),
       "cc::Tile", this);
 }
 
 void Tile::AsValueInto(base::debug::TracedValue* res) const {
   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
       TRACE_DISABLED_BY_DEFAULT("cc.debug"), res, "cc::Tile", this);
   TracedValue::SetIDRef(raster_source_.get(), res, "picture_pile");
   res->SetDouble("contents_scale", contents_scale_);
 
-  res->BeginArray("content_rect");
-  MathUtil::AddToTracedValue(content_rect_, res);
-  res->EndArray();
+  MathUtil::AddToTracedValue("content_rect", content_rect_, res);
 
   res->SetInteger("layer_id", layer_id_);
 
   res->BeginDictionary("active_priority");
   priority_[ACTIVE_TREE].AsValueInto(res);
   res->EndDictionary();
 
   res->BeginDictionary("pending_priority");
   priority_[PENDING_TREE].AsValueInto(res);
   res->EndDictionary();
@@ skipping 14 matching lines @@
   res->SetInteger("gpu_memory_usage", GPUMemoryUsageInBytes());
 }
 
 size_t Tile::GPUMemoryUsageInBytes() const {
   if (draw_info_.resource_)
     return draw_info_.resource_->bytes();
   return 0;
 }
 
 }  // namespace cc