Carry MediaStreamComponent properties on clone.

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

Index: third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp
diff --git a/third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp b/third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp
index 6793c6fc8d6a1ea21f3f577a354f6fef44b25b2d..22b8da285c2a1a1c8f3ca569c31fb6bc3c9a1e7d 100644
--- a/third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp
+++ b/third_party/WebKit/Source/platform/mediastream/MediaStreamComponent.cpp
@@ -50,11 +50,27 @@ MediaStreamComponent* MediaStreamComponent::create(const String& id,
 
 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();
 }