Remove OwnPtr from Blink.

third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp

Index: third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp
diff --git a/third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp b/third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp
index 32943eef1abe882956fcd97813c84f0eb8892c63..f883c8113c5c9f46a322ac0da1d55d3c51a77232 100644
--- a/third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp
+++ b/third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp
@@ -40,7 +40,8 @@
 #include "public/platform/WebMediaStreamCenter.h"
 #include "public/platform/WebMediaStreamTrack.h"
 #include "wtf/Assertions.h"
-#include "wtf/PassOwnPtr.h"
+#include "wtf/PtrUtil.h"
+#include <memory>
 
 namespace blink {
 
@@ -52,7 +53,7 @@ MediaStreamCenter& MediaStreamCenter::instance()
 }
 
 MediaStreamCenter::MediaStreamCenter()
-    : m_private(adoptPtr(Platform::current()->createMediaStreamCenter(this)))
+    : m_private(wrapUnique(Platform::current()->createMediaStreamCenter(this)))
 {
 }
 
@@ -121,11 +122,11 @@ void MediaStreamCenter::didCreateMediaStreamTrack(MediaStreamComponent* track)
         m_private->didCreateMediaStreamTrack(track);
 }
 
-PassOwnPtr<AudioSourceProvider> MediaStreamCenter::createWebAudioSourceFromMediaStreamTrack(MediaStreamComponent* track)
+std::unique_ptr<AudioSourceProvider> MediaStreamCenter::createWebAudioSourceFromMediaStreamTrack(MediaStreamComponent* track)
 {
     ASSERT_UNUSED(track, track);
     if (m_private)
-        return MediaStreamWebAudioSource::create(adoptPtr(m_private->createWebAudioSourceFromMediaStreamTrack(track)));
+        return MediaStreamWebAudioSource::create(wrapUnique(m_private->createWebAudioSourceFromMediaStreamTrack(track)));
 
     return nullptr;
 }