Revert "Remove OwnPtr from Blink."

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

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AudioDSPKernelProcessor_h
 #define AudioDSPKernelProcessor_h
 
 #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 {
 
 class AudioBus;
 class AudioDSPKernel;
 class AudioProcessor;
 
 // AudioDSPKernelProcessor processes one input -> one output (N channels each)
 // It uses one AudioDSPKernel object per channel to do the processing, thus there is no cross-channel processing.
 // Despite this limitation it turns out to be a very common and useful type of processor.
 
 class PLATFORM_EXPORT AudioDSPKernelProcessor : public AudioProcessor {
 public:
     // numberOfChannels may be later changed if object is not yet in an "initialized" state
     AudioDSPKernelProcessor(float sampleRate, unsigned numberOfChannels);
 
     // 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;
     void uninitialize() override;
     void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess) override;
     void reset() override;
     void setNumberOfChannels(unsigned) override;
     unsigned numberOfChannels() const override { return m_numberOfChannels; }
 
     double tailTime() const override;
     double latencyTime() const override;
 
 protected:
-    Vector<std::unique_ptr<AudioDSPKernel>> m_kernels;
+    Vector<OwnPtr<AudioDSPKernel>> m_kernels;
     mutable Mutex m_processLock;
     bool m_hasJustReset;
 };
 
 } // namespace blink
 
 #endif // AudioDSPKernelProcessor_h