Move ReadFileToString to the base namespace.

chrome/browser/net/transport_security_persister.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/net/transport_security_persister.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 76 matching lines @@
  public:
   Loader(const base::WeakPtr<TransportSecurityPersister>& persister,
          const base::FilePath& path)
       : persister_(persister),
         path_(path),
         state_valid_(false) {
   }
 
   void Load() {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
-    state_valid_ = file_util::ReadFileToString(path_, &state_);
+    state_valid_ = base::ReadFileToString(path_, &state_);
   }
 
   void CompleteLoad() {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
     // Make sure we're deleted.
     scoped_ptr<Loader> deleter(this);
 
     if (!persister_.get() || !state_valid_)
       return;
@@ skipping 222 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   bool dirty = false;
   if (!LoadEntries(state, &dirty)) {
     LOG(ERROR) << "Failed to deserialize state: " << state;
     return;
   }
   if (dirty)
     StateIsDirty(transport_security_state_);
 }