Revert of Remove MediaStreamTrack.getSources().

third_party/WebKit/Source/platform/mediastream/MediaStreamTrackSourcesRequest.h

Index: third_party/WebKit/Source/platform/mediastream/MediaStreamTrackSourcesRequest.h
diff --git a/third_party/WebKit/Source/platform/mediastream/MediaStreamTrackSourcesRequest.h b/third_party/WebKit/Source/platform/mediastream/MediaStreamTrackSourcesRequest.h
new file mode 100644
index 0000000000000000000000000000000000000000..37f351ad3ccab26802b618fa6fb5b0ff80ff49e3
--- /dev/null
+++ b/third_party/WebKit/Source/platform/mediastream/MediaStreamTrackSourcesRequest.h
@@ -0,0 +1,54 @@
+/*
+ * 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef MediaStreamTrackSourcesRequest_h
+#define MediaStreamTrackSourcesRequest_h
+
+#include "platform/heap/Handle.h"
+#include "public/platform/WebVector.h"
+#include "wtf/Forward.h"
+
+namespace blink {
+
+class SecurityOrigin;
+class WebSourceInfo;
+
+class MediaStreamTrackSourcesRequest
+    : public GarbageCollectedFinalized<MediaStreamTrackSourcesRequest> {
+ public:
+  virtual ~MediaStreamTrackSourcesRequest() {}
+
+  virtual PassRefPtr<SecurityOrigin> origin() = 0;
+  virtual void requestSucceeded(const WebVector<WebSourceInfo>&) = 0;
+
+  DEFINE_INLINE_VIRTUAL_TRACE() {}
+
+ protected:
+  MediaStreamTrackSourcesRequest() {}
+};
+
+}  // namespace blink
+
+#endif  // MediaStreamTrackSourcesRequest_h