Revert "Remove OwnPtr from Blink."

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

Index: third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.h
diff --git a/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.h b/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.h
index abc1e2067e488153e98b221314177ca8271d25e6..ac02a9c09cadc6909be08f7d033a8e490cc6ee1a 100644
--- a/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.h
+++ b/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.h
@@ -33,9 +33,10 @@
 
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/AudioProcessor.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 #include "wtf/ThreadingPrimitives.h"
 #include "wtf/Vector.h"
-#include <memory>
 
 namespace blink {
 
@@ -54,7 +55,7 @@ public:
 
     // Subclasses create the appropriate type of processing kernel here.
     // We'll call this to create a kernel for each channel.
-    virtual std::unique_ptr<AudioDSPKernel> createKernel() = 0;
+    virtual PassOwnPtr<AudioDSPKernel> createKernel() = 0;
 
     // AudioProcessor methods
     void initialize() override;
@@ -68,7 +69,7 @@ public:
     double latencyTime() const override;
 
 protected:
-    Vector<std::unique_ptr<AudioDSPKernel>> m_kernels;
+    Vector<OwnPtr<AudioDSPKernel>> m_kernels;
     mutable Mutex m_processLock;
     bool m_hasJustReset;
 };