Fire CanPlayThrough immediately for local and streaming media files

webkit/media/webmediaplayer_impl.cc

Index: webkit/media/webmediaplayer_impl.cc
diff --git a/webkit/media/webmediaplayer_impl.cc b/webkit/media/webmediaplayer_impl.cc
index 22c24d3be8932abb4ba3db6bc2e1225817503bc2..5f18bd706cf4ac8aad96ee950bf96a0b45179774 100644
--- a/webkit/media/webmediaplayer_impl.cc
+++ b/webkit/media/webmediaplayer_impl.cc
@@ -291,9 +291,14 @@ void WebMediaPlayerImpl::load(const WebKit::WebURL& url) {
     }
 
     // TODO(wjia): add audio decoder handling when it's available.
-    if (has_video || has_audio)
+    if (has_video || has_audio) {
+      // TODO(vrk/wjia): Setting "true" for is_local is under the assumption
+      // that the MediaStream represents a local webcam. This will need to
+      // change in the future when GetVideoDecoder is no longer hardcoded to
+      // only return CaptureVideoDecoders.
       filter_collection_->SetDemuxerFactory(
-          new media::DummyDemuxerFactory(has_video, has_audio));
+          new media::DummyDemuxerFactory(has_video, has_audio, true));
+    }
   }
 
   // Handle any volume changes that occured before load().
@@ -746,7 +751,7 @@ void WebMediaPlayerImpl::OnPipelineInitialize(PipelineStatus status) {
                             is_accelerated_compositing_active_);
     }
 
-    if (pipeline_->IsLoaded())
+    if (pipeline_->IsLocalSource())
       SetNetworkState(WebKit::WebMediaPlayer::Loaded);
 
     SetReadyState(WebKit::WebMediaPlayer::HaveMetadata);