Move ReadFileToString to the base namespace.

chrome/test/chromedriver/session_commands_unittest.cc

 // Copyright (c) 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 <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 20 matching lines @@
       "UEsDBBQAAAAAAMROi0K/wAzGBAAAAAQAAAADAAAAbW9vQ09XClBLAQIUAxQAAAAAAMROi0K/"
       "wAzG\nBAAAAAQAAAADAAAAAAAAAAAAAACggQAAAABtb29QSwUGAAAAAAEAAQAxAAAAJQAAAA"
       "AA\n";
   params.SetString("file", kBase64ZipEntry);
   Status status = ExecuteUploadFile(&session, params, &value);
   ASSERT_EQ(kOk, status.code()) << status.message();
   base::FilePath::StringType path;
   ASSERT_TRUE(value->GetAsString(&path));
   ASSERT_TRUE(base::PathExists(base::FilePath(path)));
   std::string data;
-  ASSERT_TRUE(file_util::ReadFileToString(base::FilePath(path), &data));
+  ASSERT_TRUE(base::ReadFileToString(base::FilePath(path), &data));
   ASSERT_STREQ("COW\n", data.c_str());
 }
 
 namespace {
 
 class DetachChrome : public StubChrome {
  public:
   DetachChrome() : quit_called_(false) {}
   virtual ~DetachChrome() {}
 
@@ skipping 52 matching lines @@
 };
 
 }  // namespace
 
 TEST(SessionCommandsTest, QuitFails) {
   Session session("id", scoped_ptr<Chrome>(new FailsToQuitChrome()));
   base::DictionaryValue params;
   scoped_ptr<base::Value> value;
   ASSERT_EQ(kUnknownError, ExecuteQuit(false, &session, params, &value).code());
 }