Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

third_party/WebKit/Source/modules/screen_orientation/ScreenOrientation.cpp

 // Copyright 2014 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.
 
 #include "modules/screen_orientation/ScreenOrientation.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
@@ skipping 153 matching lines @@
   if (document->isSandboxed(SandboxOrientationLock)) {
     DOMException* exception =
         DOMException::create(SecurityError,
                              "The document is sandboxed and lacks the "
                              "'allow-orientation-lock' flag.");
     resolver->reject(exception);
     return promise;
   }
 
   controller()->lock(stringToOrientationLock(lockString),
-                     new LockOrientationCallback(resolver));
+                     WTF::makeUnique<LockOrientationCallback>(resolver));
   return promise;
 }
 
 void ScreenOrientation::unlock() {
   if (!controller())
     return;
 
   controller()->unlock();
 }
 
 ScreenOrientationController* ScreenOrientation::controller() {
   if (!frame())
     return 0;
 
   return ScreenOrientationController::from(*frame());
 }
 
 DEFINE_TRACE(ScreenOrientation) {
   EventTargetWithInlineData::trace(visitor);
   DOMWindowProperty::trace(visitor);
 }
 
 }  // namespace blink