Move ReadFileToString to the base namespace.

base/json/json_reader_unittest.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 "base/json/json_reader.h"
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 529 matching lines @@
   EXPECT_EQ("root", str_val);
 }
 
 TEST(JSONReaderTest, ReadFromFile) {
   FilePath path;
   ASSERT_TRUE(PathService::Get(base::DIR_TEST_DATA, &path));
   path = path.AppendASCII("json");
   ASSERT_TRUE(base::PathExists(path));
 
   std::string input;
-  ASSERT_TRUE(file_util::ReadFileToString(
+  ASSERT_TRUE(ReadFileToString(
       path.Append(FILE_PATH_LITERAL("bom_feff.json")), &input));
 
   JSONReader reader;
   scoped_ptr<Value> root(reader.ReadToValue(input));
   ASSERT_TRUE(root.get()) << reader.GetErrorMessage();
   EXPECT_TRUE(root->IsType(Value::TYPE_DICTIONARY));
 }
 
 // Tests that the root of a JSON object can be deleted safely while its
 // children outlive it.
@@ skipping 86 matching lines @@
 
 TEST(JSONReaderTest, IllegalTrailingNull) {
   const char json[] = { '"', 'n', 'u', 'l', 'l', '"', '\0' };
   std::string json_string(json, sizeof(json));
   JSONReader reader;
   EXPECT_FALSE(reader.ReadToValue(json_string));
   EXPECT_EQ(JSONReader::JSON_UNEXPECTED_DATA_AFTER_ROOT, reader.error_code());
 }
 
 }  // namespace base