MediaStream API: Changing the device enumeration to be async

Source/modules/mediastream/MediaStreamTrackSourcesRequest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
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  * modification, are permitted provided that the following conditions
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-#ifndef SourceInfo_h
-#define SourceInfo_h
+#include "config.h"
 
-#include "bindings/v8/ScriptWrappable.h"
+#include "modules/mediastream/MediaStreamTrackSourcesRequest.h"
+
+#include "core/dom/ScriptExecutionContext.h"
+#include "modules/mediastream/MediaStreamTrackSourcesCallback.h"
 #include "public/platform/WebSourceInfo.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/Vector.h"
+#include "weborigin/SecurityOrigin.h"
 
 namespace WebCore {
 
-class SourceInfo : public RefCounted<SourceInfo>, public ScriptWrappable {
-public:
-    static PassRefPtr<SourceInfo> create(const WebKit::WebSourceInfo&);
+PassRefPtr<MediaStreamTrackSourcesRequest> MediaStreamTrackSourcesRequest::create(ScriptExecutionContext* context, PassRefPtr<MediaStreamTrackSourcesCallback> callback)
+{
+    return adoptRef(new MediaStreamTrackSourcesRequest(context, callback));
+}
 
-    String id() const;
-    String kind() const;
-    String label() const;
-    String facing() const;
+MediaStreamTrackSourcesRequest::MediaStreamTrackSourcesRequest(ScriptExecutionContext* context, PassRefPtr<MediaStreamTrackSourcesCallback> callback)
+    : m_callback(callback)
+{
+    m_url = context->securityOrigin()->toString();

[abarth-chromium, 2013/06/14 14:17:48]

I still don't understand why this field is called |m_url| if it's really the
toString of the origin.  (Sorry if you answered this before.)

+}
 
-private:
-    explicit SourceInfo(const WebKit::WebSourceInfo&);
+MediaStreamTrackSourcesRequest::~MediaStreamTrackSourcesRequest()
+{
+}
 
-    WebKit::WebSourceInfo m_webSourceInfo;
-};
+void MediaStreamTrackSourcesRequest::requestSucceeded(const WebKit::WebVector<WebKit::WebSourceInfo>& webSourceInfos)
+{
+    if (m_callback) {
+        SourceInfoVector sourceInfos;
+        for (size_t i = 0; i < webSourceInfos.size(); ++i)
+            sourceInfos.append(SourceInfo::create(webSourceInfos[i]));
 
-typedef Vector<RefPtr<SourceInfo> > SourceInfoVector;
+        m_callback->handleEvent(sourceInfos);
+    }
+
+    m_callback.clear();
+}
 
 } // namespace WebCore
-
-#endif // SourceInfo_h