Remove stray platform_file.h from chrome and components

chrome/browser/media_galleries/fileapi/media_file_validator_factory.cc

 // Copyright 2013 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 "chrome/browser/media_galleries/fileapi/media_file_validator_factory.h"
 
 #include "base/files/file_path.h"
-#include "base/platform_file.h"
 #include "chrome/browser/media_galleries/fileapi/supported_audio_video_checker.h"
 #include "chrome/browser/media_galleries/fileapi/supported_image_type_validator.h"
 #include "webkit/browser/fileapi/copy_or_move_file_validator.h"
 #include "webkit/browser/fileapi/file_system_url.h"
 
 namespace {
 
 class InvalidFileValidator : public fileapi::CopyOrMoveFileValidator {
  public:
   virtual ~InvalidFileValidator() {}
@@ skipping 28 matching lines @@
     const fileapi::FileSystemURL& src,
     const base::FilePath& platform_path) {
   base::FilePath src_path = src.virtual_path();
   if (SupportedImageTypeValidator::SupportsFileType(src_path))
     return new SupportedImageTypeValidator(platform_path);
   if (SupportedAudioVideoChecker::SupportsFileType(src_path))
     return new SupportedAudioVideoChecker(platform_path);
 
   return new InvalidFileValidator();
 }