Replaced PassRefPtr copies with moves in Source/core.

third_party/WebKit/Source/core/dom/RemoteSecurityContext.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 "core/dom/RemoteSecurityContext.h"
 
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/Assertions.h"
 
@@ skipping 20 matching lines @@
 }
 
 DEFINE_TRACE(RemoteSecurityContext)
 {
     SecurityContext::trace(visitor);
 }
 
 void RemoteSecurityContext::setReplicatedOrigin(PassRefPtr<SecurityOrigin> origin)
 {
     DCHECK(origin);
-    setSecurityOrigin(origin);
+    setSecurityOrigin(std::move(origin));
     contentSecurityPolicy()->setupSelf(*getSecurityOrigin());
 }
 
 void RemoteSecurityContext::resetReplicatedContentSecurityPolicy()
 {
     DCHECK(getSecurityOrigin());
     setContentSecurityPolicy(ContentSecurityPolicy::create());
     contentSecurityPolicy()->setupSelf(*getSecurityOrigin());
 }
 
 } // namespace blink