Remove #pragma once from content

content/shell/layout_test_controller_bindings.h

 // Copyright (c) 2012 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 CONTENT_SHELL_LAYOUT_TEST_CONTROLLER_BINDINGS_H_
 #define CONTENT_SHELL_LAYOUT_TEST_CONTROLLER_BINDINGS_H_
-#pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "v8/include/v8.h"
 
 namespace content {
 
 class LayoutTestControllerBindings : public v8::Extension {
  public:
   LayoutTestControllerBindings();
   virtual ~LayoutTestControllerBindings();
 
   // v8::Extension implementation.
   virtual v8::Handle<v8::FunctionTemplate>
       GetNativeFunction(v8::Handle<v8::String> name) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LayoutTestControllerBindings);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_LAYOUT_TEST_CONTROLLER_BINDINGS_H_