Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/audio/AudioDestination.h

Index: third_party/WebKit/Source/platform/audio/AudioDestination.h
diff --git a/third_party/WebKit/Source/platform/audio/AudioDestination.h b/third_party/WebKit/Source/platform/audio/AudioDestination.h
index 14c8f916971876bea8ac766b2291c643ee585af9..70b4780e72f6be3b0147b67030f2a0c53091fbc4 100644
--- a/third_party/WebKit/Source/platform/audio/AudioDestination.h
+++ b/third_party/WebKit/Source/platform/audio/AudioDestination.h
@@ -37,7 +37,6 @@
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/text/WTFString.h"
-#include <memory>
 
 namespace blink {
 
@@ -56,7 +55,7 @@ public:
 
     // Pass in (numberOfInputChannels > 0) if live/local audio input is desired.
     // Port-specific device identification information for live/local input streams can be passed in the inputDeviceId.
-    static std::unique_ptr<AudioDestination> create(AudioIOCallback&, const String& inputDeviceId, unsigned numberOfInputChannels, unsigned numberOfOutputChannels, float sampleRate, const PassRefPtr<SecurityOrigin>&);
+    static PassOwnPtr<AudioDestination> create(AudioIOCallback&, const String& inputDeviceId, unsigned numberOfInputChannels, unsigned numberOfOutputChannels, float sampleRate, const PassRefPtr<SecurityOrigin>&);
 
     virtual void start();
     virtual void stop();
@@ -87,11 +86,11 @@ private:
     RefPtr<AudioBus> m_renderBus;
     float m_sampleRate;
     bool m_isPlaying;
-    std::unique_ptr<WebAudioDevice> m_audioDevice;
+    OwnPtr<WebAudioDevice> m_audioDevice;
     size_t m_callbackBufferSize;
 
-    std::unique_ptr<AudioFIFO> m_inputFifo;
-    std::unique_ptr<AudioPullFIFO> m_fifo;
+    OwnPtr<AudioFIFO> m_inputFifo;
+    OwnPtr<AudioPullFIFO> m_fifo;
 };
 
 } // namespace blink