Fixes bug where changing the src of an audio/video element would stop firing events.

webkit/glue/webmediaplayer_impl.cc

 // Copyright (c) 2008-2009 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 "webkit/glue/webmediaplayer_impl.h"
 
 #include "base/command_line.h"
 #include "googleurl/src/gurl.h"
 #include "media/base/media_format.h"
 #include "media/filters/ffmpeg_audio_decoder.h"
@@ skipping 524 matching lines @@
       break;
   }
 
   // Repaint to trigger UI update.
   Repaint();
 }
 
 void WebMediaPlayerImpl::SetNetworkState(
     WebKit::WebMediaPlayer::NetworkState state) {
   DCHECK(MessageLoop::current() == main_loop_);
-  if (network_state_ != state) {
-    network_state_ = state;
-    GetClient()->networkStateChanged();
-  }
+  // Always notify of any state change to ensure the client remains in sync.
+  network_state_ = state;
+  GetClient()->networkStateChanged();
 }
 
 void WebMediaPlayerImpl::SetReadyState(
     WebKit::WebMediaPlayer::ReadyState state) {
   DCHECK(MessageLoop::current() == main_loop_);
-  if (ready_state_ != state) {
-    ready_state_ = state;
-    GetClient()->readyStateChanged();
-  }
+  // Always notify of any state change to ensure the client remains in sync.
+  ready_state_ = state;
+  GetClient()->readyStateChanged();
 }
 
 void WebMediaPlayerImpl::Destroy() {
   DCHECK(MessageLoop::current() == main_loop_);
 
   // Make sure to kill the pipeline so there's no more media threads running.
   // TODO(hclam): stopping the pipeline might block for a long time.
   pipeline_->Stop(NULL);
   pipeline_thread_.Stop();
 
   // And then detach the proxy, it may live on the render thread for a little
   // longer until all the tasks are finished.
   if (proxy_) {
     proxy_->Detach();
     proxy_ = NULL;
   }
 }
 
 WebKit::WebMediaPlayerClient* WebMediaPlayerImpl::GetClient() {
   DCHECK(MessageLoop::current() == main_loop_);
   DCHECK(client_);
   return client_;
 }
 
 }  // namespace webkit_glue