Add more string_util functions to base namespace.

chrome/browser/prefs/profile_pref_store_manager_unittest.cc

 // Copyright 2014 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/prefs/profile_pref_store_manager.h"
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_enumerator.h"
@@ skipping 220 matching lines @@
   void ReplaceStringInPrefs(const std::string& find,
                             const std::string& replace) {
     base::FileEnumerator file_enum(
         profile_dir_.path(), true, base::FileEnumerator::FILES);
 
     for (base::FilePath path = file_enum.Next(); !path.empty();
          path = file_enum.Next()) {
       // Tamper with the file's contents
       std::string contents;
       EXPECT_TRUE(base::ReadFileToString(path, &contents));
-      ReplaceSubstringsAfterOffset(&contents, 0u, find, replace);
+      base::ReplaceSubstringsAfterOffset(&contents, 0u, find, replace);
       EXPECT_EQ(static_cast<int>(contents.length()),
                 base::WriteFile(path, contents.c_str(), contents.length()));
     }
   }
 
   void ExpectStringValueEquals(const std::string& name,
                                const std::string& expected) {
     const base::Value* value = NULL;
     std::string as_string;
     if (!pref_store_->GetValue(name, &value)) {
@@ skipping 322 matching lines @@
   ExpectStringValueEquals(kProtectedAtomic, kHelloWorld);
 
   // Trigger the logic that migrates it back to the unprotected preferences
   // file.
   pref_store_->SetValue(kProtectedAtomic, new base::StringValue(kGoodbyeWorld),
                         WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
   LoadExistingPrefs();
   ExpectStringValueEquals(kProtectedAtomic, kGoodbyeWorld);
   VerifyResetRecorded(false);
 }