Import TestRunner library into chromium.

content/shell/renderer/test_runner/MockWebAudioDevice.h

Index: content/shell/renderer/test_runner/MockWebAudioDevice.h
diff --git a/content/shell/renderer/test_runner/MockWebAudioDevice.h b/content/shell/renderer/test_runner/MockWebAudioDevice.h
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+++ b/content/shell/renderer/test_runner/MockWebAudioDevice.h
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+// Copyright 2013 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.
+
+#ifndef MockWebAudioDevice_h
+#define MockWebAudioDevice_h
+
+#include "content/shell/renderer/test_runner/TestCommon.h"
+#include "third_party/WebKit/public/platform/WebAudioDevice.h"
+#include "third_party/WebKit/public/platform/WebNonCopyable.h"
+
+namespace WebTestRunner {
+
+class MockWebAudioDevice : public blink::WebAudioDevice, public blink::WebNonCopyable {
+public:
+    explicit MockWebAudioDevice(double sampleRate);
+    virtual ~MockWebAudioDevice();
+
+    virtual void start();
+    virtual void stop();
+    virtual double sampleRate();
+
+private:
+    double m_sampleRate;
+};
+
+} // namespace WebTestRunner
+
+#endif // MockWebAudioDevice_h