Move ReadFileToString to the base namespace.

chrome/browser/extensions/image_loader.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 "chrome/browser/extensions/image_loader.h"
 
 #include <map>
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 65 matching lines @@
   *bitmap = *image.bitmap();
 }
 
 void LoadImageOnBlockingPool(const ImageLoader::ImageRepresentation& image_info,
                              SkBitmap* bitmap) {
   DCHECK(BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
 
   // Read the file from disk.
   std::string file_contents;
   base::FilePath path = image_info.resource.GetFilePath();
-  if (path.empty() || !file_util::ReadFileToString(path, &file_contents)) {
+  if (path.empty() || !base::ReadFileToString(path, &file_contents)) {
     return;
   }
 
   const unsigned char* data =
       reinterpret_cast<const unsigned char*>(file_contents.data());
   // Note: This class only decodes bitmaps from extension resources. Chrome
   // doesn't (for security reasons) directly load extension resources provided
   // by the extension author, but instead decodes them in a separate
   // locked-down utility process. Only if the decoding succeeds is the image
   // saved from memory to disk and subsequently used in the Chrome UI.
@@ skipping 243 matching lines @@
   gfx::Image image;
   if (!image_skia.isNull()) {
     image_skia.MakeThreadSafe();
     image = gfx::Image(image_skia);
   }
 
   callback.Run(image);
 }
 
 }  // namespace extensions