Add more string_util functions to base namespace.

chrome/browser/extensions/api/commands/command_service.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/extensions/api/commands/command_service.h"
 
 #include <vector>
 
 #include "base/lazy_instance.h"
 #include "base/prefs/scoped_user_pref_update.h"
@@ skipping 57 matching lines @@
   return key;
 }
 
 bool IsForCurrentPlatform(const std::string& key) {
   return base::StartsWithASCII(key, Command::CommandPlatform() + ":", true);
 }
 
 std::string StripCurrentPlatform(const std::string& key) {
   DCHECK(IsForCurrentPlatform(key));
   std::string result = key;
-  ReplaceFirstSubstringAfterOffset(&result, 0, Command::CommandPlatform() + ":",
-                                   "");
+  base::ReplaceFirstSubstringAfterOffset(
+      &result, 0, Command::CommandPlatform() + ":", base::StringPiece());
   return result;
 }
 
 void SetInitialBindingsHaveBeenAssigned(
     ExtensionPrefs* prefs, const std::string& extension_id) {
   prefs->UpdateExtensionPref(extension_id, kInitialBindingsHaveBeenAssigned,
                              new base::FundamentalValue(true));
 }
 
 bool InitialBindingsHaveBeenAssigned(
@@ skipping 818 matching lines @@
   return true;
 }
 
 template <>
 void
 BrowserContextKeyedAPIFactory<CommandService>::DeclareFactoryDependencies() {
   DependsOn(ExtensionCommandsGlobalRegistry::GetFactoryInstance());
 }
 
 }  // namespace extensions