Implement HTMLMediaElement::srcObject.

Source/core/html/MediaProvider.cpp

Index: Source/core/html/MediaProvider.cpp
diff --git a/Source/core/dom/custom/CustomElementAsyncImportMicrotaskQueue.cpp b/Source/core/html/MediaProvider.cpp
similarity index 51%
copy from Source/core/dom/custom/CustomElementAsyncImportMicrotaskQueue.cpp
copy to Source/core/html/MediaProvider.cpp
index d5e946c4b0c7c7c94903f766a0981b4648e30b69..5760387823ea4783f186f7f80e66b36aae8f61b8 100644
--- a/Source/core/dom/custom/CustomElementAsyncImportMicrotaskQueue.cpp
+++ b/Source/core/html/MediaProvider.cpp
@@ -29,27 +29,63 @@
  */
 
 #include "config.h"
-#include "core/dom/custom/CustomElementAsyncImportMicrotaskQueue.h"
+#include "core/html/MediaProvider.h"
 
-#include "core/dom/custom/CustomElementMicrotaskImportStep.h"
+#include "core/dom/DOMURL.h"
+#include "modules/mediasource/MediaSource.h"
+#include "modules/mediastream/MediaStream.h"
+#include "wtf/PassRefPtr.h"
 
 namespace blink {
 
-void CustomElementAsyncImportMicrotaskQueue::enqueue(PassOwnPtrWillBeRawPtr<CustomElementMicrotaskStep> step)
+MediaProvider::MediaProvider(PassRefPtrWillBeRawPtr<MediaStream> stream)
+    : m_mediastream(stream.get())
 {
-    m_queue.append(step);
 }
 
-void CustomElementAsyncImportMicrotaskQueue::doDispatch()
+MediaProvider::MediaProvider(PassRefPtrWillBeRawPtr<MediaSource> source)
+    : m_mediasource(source.get())
 {
-    WillBeHeapVector<OwnPtrWillBeMember<CustomElementMicrotaskStep> > remaining;
+}
+
+MediaStream* MediaProvider::mediaStream() const {
+    return m_mediastream.get();
+}
 
-    for (unsigned i = 0; i < m_queue.size(); ++i) {
-        if (CustomElementMicrotaskStep::Processing == m_queue[i]->process())
-            remaining.append(m_queue[i].release());
+MediaSource* MediaProvider::mediaSource() const {
+    return m_mediasource.get();
+}
+
+String MediaProvider::createObjectUrl() {
+    blink::ExecutionContext* context = NULL;
+    URLRegistrable* registrable = NULL;
+    if (m_mediastream) {
+        context = m_mediastream->executionContext();
+        registrable = m_mediastream.get();
+    } else if (m_mediasource) {
+        context = m_mediasource->executionContext();
+        registrable = m_mediasource.get();
     }
+    return DOMURL::createPublicURL(context, registrable);
+}
 
-    m_queue.swap(remaining);
+PassRefPtrWillBeRawPtr<MediaProvider> MediaProvider::createFromMediaStream(PassRefPtrWillBeRawPtr<MediaStream> stream)
+{
+    if (!stream)
+        return nullptr;
+    return adoptRefWillBeNoop(new MediaProvider(stream));
+}
+
+PassRefPtrWillBeRawPtr<MediaProvider> MediaProvider::createFromMediaSource(PassRefPtrWillBeRawPtr<MediaSource> source)
+{
+    if (!source)
+        return nullptr;
+    return adoptRefWillBeNoop(new MediaProvider(source));
+}
+
+void MediaProvider::trace(Visitor* visitor)
+{
+    visitor->trace(m_mediastream);
 }
 
-} // namespace blink
+}  // namespace blink