Add sinkId/setSinkId() extension to HTMLMediaElement.

Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.cpp

Index: Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.cpp
diff --git a/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.cpp b/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..5e7fd020a86f6056034fe76be2c43acdd12b5c62
--- /dev/null
+++ b/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.cpp
@@ -0,0 +1,53 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h"
+
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "bindings/core/v8/ScriptState.h"
+#include "core/dom/ExecutionContext.h"
+#include "platform/Logging.h"
+
+namespace blink {
+
+HTMLMediaElementAudioOutputDevice::HTMLMediaElementAudioOutputDevice()
+    : m_sinkId("")
+{
+}
+
+String HTMLMediaElementAudioOutputDevice::sinkId(HTMLMediaElement& element)
+{
+    WTF_LOG(Media, __FUNCTION__);

[Peter Beverloo, 2015/06/18 14:21:20]

Did you mean to land these WTF_LOG statements?

+    HTMLMediaElementAudioOutputDevice& aodElement = HTMLMediaElementAudioOutputDevice::from(element);
+    return aodElement.m_sinkId;
+}
+
+ScriptPromise HTMLMediaElementAudioOutputDevice::setSinkId(ScriptState* scriptState, HTMLMediaElement& element, const String& newSinkId)
+{
+    WTF_LOG(Media, __FUNCTION__);
+    return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(NotSupportedError, "Operation not supported"));
+}
+
+const char* HTMLMediaElementAudioOutputDevice::supplementName()
+{
+    return "HTMLMediaElementAudioOutputDevice";
+}
+
+HTMLMediaElementAudioOutputDevice& HTMLMediaElementAudioOutputDevice::from(HTMLMediaElement& element)
+{
+    HTMLMediaElementAudioOutputDevice* supplement = static_cast<HTMLMediaElementAudioOutputDevice*>(WillBeHeapSupplement<HTMLMediaElement>::from(element, supplementName()));
+    if (!supplement) {
+        supplement = new HTMLMediaElementAudioOutputDevice();
+        provideTo(element, supplementName(), adoptPtrWillBeNoop(supplement));
+    }
+    return *supplement;
+}
+
+DEFINE_TRACE(HTMLMediaElementAudioOutputDevice)
+{
+    WillBeHeapSupplement<HTMLMediaElement>::trace(visitor);
+}
+
+} // namespace blink