Remove #pragma once from content

content/renderer/android/phone_number_detector.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_RENDERER_ANDROID_PHONE_NUMBER_DETECTOR_H_
 #define CONTENT_RENDERER_ANDROID_PHONE_NUMBER_DETECTOR_H_
-#pragma once
 
 #include "base/compiler_specific.h"
 #include "content/renderer/android/content_detector.h"
 
 class PhoneNumberDetectorTest;
 
 namespace content {
 
 // Finds a telephone number in the given content text string.
 class PhoneNumberDetector : public ContentDetector {
@@ skipping 15 matching lines @@
   virtual size_t GetMaximumContentLength() OVERRIDE;
 
   const std::string region_code_;
 
   DISALLOW_COPY_AND_ASSIGN(PhoneNumberDetector);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ANDROID_PHONE_NUMBER_DETECTOR_H_