Remove OwnPtr from Blink.

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

Index: third_party/WebKit/Source/platform/audio/AudioBus.h
diff --git a/third_party/WebKit/Source/platform/audio/AudioBus.h b/third_party/WebKit/Source/platform/audio/AudioBus.h
index eb202360bc8e32f4efd43318abb2217b32e8664f..6f66196163cff6bdc401039a95d5ef2516568299 100644
--- a/third_party/WebKit/Source/platform/audio/AudioBus.h
+++ b/third_party/WebKit/Source/platform/audio/AudioBus.h
@@ -31,9 +31,9 @@
 
 #include "platform/audio/AudioChannel.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/PassOwnPtr.h"
 #include "wtf/ThreadSafeRefCounted.h"
 #include "wtf/Vector.h"
+#include <memory>
 
 namespace blink {
 
@@ -159,10 +159,10 @@ protected:
     void sumFromByDownMixing(const AudioBus&);
 
     size_t m_length;
-    Vector<OwnPtr<AudioChannel>> m_channels;
+    Vector<std::unique_ptr<AudioChannel>> m_channels;
     int m_layout;
     float m_busGain;
-    OwnPtr<AudioFloatArray> m_dezipperGainValues;
+    std::unique_ptr<AudioFloatArray> m_dezipperGainValues;
     bool m_isFirstTime;
     float m_sampleRate; // 0.0 if unknown or N/A
 };