Add builders for tracing event's structural arguments

cc/quads/stream_video_draw_quad.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/quads/stream_video_draw_quad.h"
 
+#include "base/debug/trace_event_argument.h"
 #include "base/logging.h"
 #include "base/values.h"
 #include "cc/base/math_util.h"
 
 namespace cc {
 
 StreamVideoDrawQuad::StreamVideoDrawQuad() : resource_id(0) {}
 
 void StreamVideoDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                                  const gfx::Rect& rect,
@@ skipping 25 matching lines @@
     const ResourceIteratorCallback& callback) {
   resource_id = callback.Run(resource_id);
 }
 
 const StreamVideoDrawQuad* StreamVideoDrawQuad::MaterialCast(
     const DrawQuad* quad) {
   DCHECK(quad->material == DrawQuad::STREAM_VIDEO_CONTENT);
   return static_cast<const StreamVideoDrawQuad*>(quad);
 }
 
-void StreamVideoDrawQuad::ExtendValue(base::DictionaryValue* value) const {
+void StreamVideoDrawQuad::ExtendValue(base::debug::TracedValue* value) const {
   value->SetInteger("resource_id", resource_id);
-  value->Set("matrix", MathUtil::AsValue(matrix).release());
+  value->BeginArray("matrix");
+  MathUtil::AddToTracedValue(matrix, value);
+  value->EndArray();
 }
 
 }  // namespace cc