Plumb media data from renderers up to MediaInternals in the browser process.

chrome/browser/media/media_internals.cc

 // 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.
 
 #include "chrome/browser/media/media_internals.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "base/stringprintf.h"
 #include "chrome/browser/media/media_internals_observer.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/webui/web_ui.h"
+#include "media/base/media_log_event.h"
 
 // The names of the javascript functions to call with updates.
 static const char kDeleteItemFunction[] = "media.onItemDeleted";
 static const char kAudioUpdateFunction[] = "media.addAudioStream";
 static const char kSendEverythingFunction[] = "media.onReceiveEverything";
 
 MediaInternals::~MediaInternals() {}
 
 void MediaInternals::OnDeleteAudioStream(void* host, int stream_id) {
   DCHECK(CalledOnValidThread());
@@ skipping 16 matching lines @@
                     "status", Value::CreateStringValue(status));
 }
 
 void MediaInternals::OnSetAudioStreamVolume(
     void* host, int stream_id, double volume) {
   DCHECK(CalledOnValidThread());
   UpdateAudioStream(host, stream_id,
                     "volume", Value::CreateDoubleValue(volume));
 }
 
+void MediaInternals::OnMediaEvent(
+    int render_process_id, const media::MediaLogEvent& event) {
+  DCHECK(CalledOnValidThread());
+  // TODO(scottfr): Handle |event|. Record status information in data_ and pass
+  //                |event| along to observers.
+}
+
 void MediaInternals::AddObserver(MediaInternalsObserver* observer) {
   DCHECK(CalledOnValidThread());
   observers_.AddObserver(observer);
 }
 
 void MediaInternals::RemoveObserver(MediaInternalsObserver* observer) {
   DCHECK(CalledOnValidThread());
   observers_.RemoveObserver(observer);
 }
 
@@ skipping 32 matching lines @@
 
 void MediaInternals::SendUpdate(const std::string& function, Value* value) {
   // Only bother serializing the update to JSON if someone is watching.
   if (observers_.size()) {
     std::vector<const Value*> args;
     args.push_back(value);
     string16 update = WebUI::GetJavascriptCall(function, args);
     FOR_EACH_OBSERVER(MediaInternalsObserver, observers_, OnUpdate(update));
   }
 }