Carry MediaStreamComponent properties on clone.

third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp

 /*
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 32 matching lines @@
   return new MediaStreamComponent(createCanonicalUUIDString(), source);
 }
 
 MediaStreamComponent* MediaStreamComponent::create(const String& id,
                                                    MediaStreamSource* source) {
   return new MediaStreamComponent(id, source);
 }
 
 MediaStreamComponent::MediaStreamComponent(const String& id,
                                            MediaStreamSource* source)
-    : m_source(source), m_id(id), m_enabled(true), m_muted(false) {
+    : MediaStreamComponent(id, source, true, false) {}
+
+MediaStreamComponent::MediaStreamComponent(const String& id,
+                                           MediaStreamSource* source,
+                                           bool enabled,
+                                           bool muted)
+    : m_source(source), m_id(id), m_enabled(enabled), m_muted(muted) {
   DCHECK(m_id.length());
   ThreadState::current()->registerPreFinalizer(this);
 }
 
+MediaStreamComponent* MediaStreamComponent::clone() const {
+  MediaStreamComponent* clonedComponent = new MediaStreamComponent(
+      createCanonicalUUIDString(), source(), m_enabled, m_muted);
+  // TODO(pbos): Clone |m_trackData| as well.
+  // TODO(pbos): Move properties from MediaStreamTrack here so that they are
+  // also cloned. Part of crbug:669212 since stopped is currently not carried
+  // over, nor is ended().
+  return clonedComponent;
+}
+
 void MediaStreamComponent::dispose() {
   m_trackData.reset();
 }
 
 void MediaStreamComponent::AudioSourceProviderImpl::wrap(
     WebAudioSourceProvider* provider) {
   MutexLocker locker(m_provideInputLock);
   m_webAudioSourceProvider = provider;
 }
 
@@ skipping 23 matching lines @@
     webAudioData[i] = bus->channel(i)->mutableData();
 
   m_webAudioSourceProvider->provideInput(webAudioData, framesToProcess);
 }
 
 DEFINE_TRACE(MediaStreamComponent) {
   visitor->trace(m_source);
 }
 
 }  // namespace blink