Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationClient.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebScreenOrientationClient_h
 #define WebScreenOrientationClient_h
 
 #include "public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
+#include <memory>
 
 namespace blink {
 
 class WebLockOrientationCallback;
 
 // Client handling screen orientation locking for a given WebFrame.
 class WebScreenOrientationClient {
  public:
   virtual ~WebScreenOrientationClient() {}
 
   // Request a screen orientation lock. The implementation will own the
   // callback.
   virtual void lockOrientation(WebScreenOrientationLockType,
-                               WebLockOrientationCallback*) = 0;
+                               std::unique_ptr<WebLockOrientationCallback>) = 0;
 
   // Unlock the screen orientation. No-op if the screen orientation was not
   // locked.
   virtual void unlockOrientation() = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebScreenOrientationClient_h