Make MediaInternals handle MediaLogEvents.

chrome/browser/media/media_internals.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_MEDIA_MEDIA_INTERNALS_H_
 #define CHROME_BROWSER_MEDIA_MEDIA_INTERNALS_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
@@ skipping 39 matching lines @@
   // (host, stream_id) is a unique id for the audio stream.
   // |host| will never be dereferenced.
   void UpdateAudioStream(void* host, int stream_id,
                          const std::string& property, Value* value);
 
   // Removes |item| from |data_|.
   void DeleteItem(const std::string& item);
 
   // Sets data_.id.property = value and notifies attached UIs using update_fn.
   // id may be any depth, e.g. "video.decoders.1.2.3"
-  void UpdateItem(const std::string& update_fn, const std::string& id,
-                  const std::string& property, Value* value);
+  void SetItemProperty(const std::string& update_fn, const std::string& id,
+                       const std::string& property, Value* value);
+
+  // Merges |properties| into data_.id and notifies attached UIs using
+  // update_fn. Takes ownership of |properties|.
+  void SetItemProperties(const std::string& update_fn, const std::string& id,
+                         DictionaryValue* properties);
 
   // Calls javascript |function|(|value|) on each attached UI.
   void SendUpdate(const std::string& function, Value* value);
 
   static MediaInternals* instance_;
   DictionaryValue data_;
   ObserverList<MediaInternalsObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaInternals);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_MEDIA_INTERNALS_H_