Prepare for move-only PassOwnPtr in the remaining directories.

third_party/WebKit/Source/platform/WebThreadSupportingGC.h

Index: third_party/WebKit/Source/platform/WebThreadSupportingGC.h
diff --git a/third_party/WebKit/Source/platform/WebThreadSupportingGC.h b/third_party/WebKit/Source/platform/WebThreadSupportingGC.h
index 32ea91a4ae037f8cfa9aceaf2c9839bf73a5d257..883e9d6db75af30d32a55aeebd3d8ca0c1791641 100644
--- a/third_party/WebKit/Source/platform/WebThreadSupportingGC.h
+++ b/third_party/WebKit/Source/platform/WebThreadSupportingGC.h
@@ -35,22 +35,22 @@ public:
 
     void postTask(const WebTraceLocation& location, PassOwnPtr<SameThreadClosure> task)
     {
-        m_thread->getWebTaskRunner()->postTask(location, task);
+        m_thread->getWebTaskRunner()->postTask(location, std::move(task));
     }
 
     void postDelayedTask(const WebTraceLocation& location, PassOwnPtr<SameThreadClosure> task, long long delayMs)
     {
-        m_thread->getWebTaskRunner()->postDelayedTask(location, task, delayMs);
+        m_thread->getWebTaskRunner()->postDelayedTask(location, std::move(task), delayMs);
     }
 
     void postTask(const WebTraceLocation& location, PassOwnPtr<CrossThreadClosure> task)
     {
-        m_thread->getWebTaskRunner()->postTask(location, task);
+        m_thread->getWebTaskRunner()->postTask(location, std::move(task));
     }
 
     void postDelayedTask(const WebTraceLocation& location, PassOwnPtr<CrossThreadClosure> task, long long delayMs)
     {
-        m_thread->getWebTaskRunner()->postDelayedTask(location, task, delayMs);
+        m_thread->getWebTaskRunner()->postDelayedTask(location, std::move(task), delayMs);
     }
 
     bool isCurrentThread() const