Move ReadFileToString to the base namespace.

chrome/installer/setup/install_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 <objbase.h>
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 217 matching lines @@
 // Test that VisualElementsManifest.xml is created with the correct content when
 // VisualElements are present.
 TEST_F(CreateVisualElementsManifestTest, VisualElementsManifestCreated) {
   ASSERT_TRUE(file_util::CreateDirectory(
       version_dir_.Append(installer::kVisualElements)));
   ASSERT_TRUE(
       installer::CreateVisualElementsManifest(test_dir_.path(), version_));
   ASSERT_TRUE(base::PathExists(manifest_path_));
 
   std::string read_manifest;
-  ASSERT_TRUE(file_util::ReadFileToString(manifest_path_, &read_manifest));
+  ASSERT_TRUE(base::ReadFileToString(manifest_path_, &read_manifest));
 
   static const char kExpectedManifest[] =
       "<Application>\r\n"
       "  <VisualElements\r\n"
       "      DisplayName='Google Chrome'\r\n"
       "      Logo='0.0.0.0\\VisualElements\\Logo.png'\r\n"
       "      SmallLogo='0.0.0.0\\VisualElements\\SmallLogo.png'\r\n"
       "      ForegroundText='light'\r\n"
       "      BackgroundColor='white'>\r\n"
       "    <DefaultTile ShowName='allLogos'/>\r\n"
@@ skipping 186 matching lines @@
   installer::EscapeXmlAttributeValueInSingleQuotes(&val);
   ASSERT_STREQ(kExpectedEscapedVal, val.c_str());
 }
 
 TEST(EscapeXmlAttributeValueTest, DontEscapeNormalValue) {
   string16 val(L"Google Chrome");
   static const wchar_t kExpectedEscapedVal[] = L"Google Chrome";
   installer::EscapeXmlAttributeValueInSingleQuotes(&val);
   ASSERT_STREQ(kExpectedEscapedVal, val.c_str());
 }