Cleanup: IWYU for base/file_util_proxy.h.

webkit/blob/local_file_reader.cc

 // 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.
 
 #include "webkit/blob/local_file_reader.h"
 
 #include "base/file_util.h"
 #include "base/file_util_proxy.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/platform_file.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 
 namespace webkit_blob {
 
 namespace {
@@ skipping 56 matching lines @@
     case base::PLATFORM_FILE_ERROR_ACCESS_DENIED:
       return net::ERR_ACCESS_DENIED;
     default:
       return net::ERR_FAILED;
   }
 }
 
 // A helper class to open, verify and seek a file stream for a given path.
 class LocalFileReader::OpenFileStreamHelper {
  public:
-  OpenFileStreamHelper(base::MessageLoopProxy* file_thread_proxy)
+  explicit OpenFileStreamHelper(base::MessageLoopProxy* file_thread_proxy)
       : file_thread_proxy_(file_thread_proxy),
         file_handle_(base::kInvalidPlatformFileValue),
         result_(net::OK) {}
   ~OpenFileStreamHelper() {
     if (file_handle_ != base::kInvalidPlatformFileValue) {
       file_thread_proxy_->PostTask(
           FROM_HERE,
           base::Bind(base::IgnoreResult(&base::ClosePlatformFile),
                      file_handle_));
     }
@@ skipping 112 matching lines @@
     return;
   }
   DCHECK(stream_impl.get());
   stream_impl_ = stream_impl.Pass();
   const int read_error = stream_impl_->Read(buf, buf_len, callback);
   if (read_error != net::ERR_IO_PENDING)
     callback.Run(read_error);
 }
 
 }  // namespace webkit_blob