Plumb render view ID to media observer

chrome/browser/media/media_internals.cc

 // Copyright (c) 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 "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 "chrome/browser/media/media_stream_capture_indicator.h"
+#include "chrome/browser/tab_contents/tab_util.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "media/base/media_log.h"
 #include "media/base/media_log_event.h"
 
+#include "base/utf_string_conversions.h"
+
 using content::BrowserThread;
 
 MediaInternals* MediaInternals::GetInstance() {
   return Singleton<MediaInternals>::get();
 }
 
 MediaInternals::~MediaInternals() {}
 
 void MediaInternals::OnDeleteAudioStream(void* host, int stream_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   std::string stream = base::StringPrintf("audio_streams.%p:%d",
                                           host, stream_id);
   DeleteItem(stream);
 }
 
 void MediaInternals::OnSetAudioStreamPlaying(
     void* host, int stream_id, bool playing) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   UpdateAudioStream(host, stream_id,
                     "playing", Value::CreateBooleanValue(playing));
 }
 
 void MediaInternals::OnSetAudioStreamStatus(
-    void* host, int stream_id, const std::string& status) {
+    void* host,
+    int stream_id,
+    int render_process_id,
+    int render_view_id,
+    const std::string& status) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   UpdateAudioStream(host, stream_id,
                     "status", Value::CreateStringValue(status));
+
+  content::WebContents* web_content =
+      tab_util::GetWebContentsByID(render_process_id, render_view_id);
+  if (web_content) {
+    string16 tab_title = web_content->GetTitle();
+    fprintf(stderr, "%s (%d, %d) - title: '%s'\n",
+        __PRETTY_FUNCTION__, render_process_id, render_view_id,
+        UTF16ToUTF8(tab_title).c_str());
+    UpdateAudioStream(host, stream_id,
+                      "tabtitle",
+                      Value::CreateStringValue(tab_title));
+  } else {
+    fprintf(stderr, "%s (%d, %d) - NULL web_contents\n",
+        __PRETTY_FUNCTION__, render_process_id, render_view_id);
+  }
 }
 
 void MediaInternals::OnSetAudioStreamVolume(
     void* host, int stream_id, double volume) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   UpdateAudioStream(host, stream_id,
                     "volume", Value::CreateDoubleValue(volume));
 }
 
 void MediaInternals::OnMediaEvent(
@@ skipping 77 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 = content::WebUI::GetJavascriptCall(function, args);
     FOR_EACH_OBSERVER(MediaInternalsObserver, observers_, OnUpdate(update));
   }
 }