WTF: Make PassOwnPtr<T> move-only.

third_party/WebKit/Source/platform/v8_inspector/V8InspectorSessionImpl.cpp

 // Copyright 2016 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 "platform/v8_inspector/V8InspectorSessionImpl.h"
 
 #include "platform/v8_inspector/InjectedScript.h"
 #include "platform/v8_inspector/InjectedScriptHost.h"
 #include "platform/v8_inspector/InspectedContext.h"
 #include "platform/v8_inspector/RemoteObjectId.h"
@@ skipping 158 matching lines @@
     ASSERT(m_instrumentationCounter + delta >= 0);
     if (!m_instrumentationCounter && m_client)
         m_client->startInstrumenting();
     m_instrumentationCounter += delta;
     if (!m_instrumentationCounter && m_client)
         m_client->stopInstrumenting();
 }
 
 void V8InspectorSessionImpl::addInspectedObject(PassOwnPtr<V8RuntimeAgent::Inspectable> inspectable)
 {
-    m_inspectedObjects.prepend(inspectable);
+    m_inspectedObjects.prepend(std::move(inspectable));
     while (m_inspectedObjects.size() > kInspectedObjectBufferSize)
         m_inspectedObjects.removeLast();
 }
 
 V8RuntimeAgent::Inspectable* V8InspectorSessionImpl::inspectedObject(unsigned num)
 {
     if (num >= m_inspectedObjects.size())
         return nullptr;
     return m_inspectedObjects[num].get();
 }
 
 } // namespace blink