Update uses of UTF conversions in chrome/common to use the base:: namespace.

chrome/common/extensions/manifest_handlers/settings_overrides_handler.cc

 // Copyright 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 "chrome/common/extensions/manifest_handlers/settings_overrides_handler.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 228 matching lines @@
   if (!settings)
     return false;
 
   scoped_ptr<SettingsOverrides> info(new SettingsOverrides);
   info->bookmarks_ui.swap(settings->bookmarks_ui);
   info->homepage = ParseHomepage(*settings, error);
   info->search_engine = ParseSearchEngine(settings.get(), error);
   info->startup_pages = ParseStartupPage(*settings, error);
   if (!info->bookmarks_ui && !info->homepage &&
       !info->search_engine && info->startup_pages.empty()) {
-    *error = ASCIIToUTF16(manifest_errors::kInvalidEmptySettingsOverrides);
+    *error =
+        base::ASCIIToUTF16(manifest_errors::kInvalidEmptySettingsOverrides);
     return false;
   }
   info->manifest_permission.reset(new ManifestPermissionImpl(
       info->RequiresHideBookmarkButtonPermission()));
 
   APIPermissionSet* permission_set =
       PermissionsData::GetInitialAPIPermissions(extension);
   DCHECK(permission_set);
   if (info->search_engine) {
     permission_set->insert(new SettingsOverrideAPIPermission(
@@ skipping 46 matching lines @@
   const SettingsOverrides* data = SettingsOverrides::Get(extension);
   if (data)
     return data->manifest_permission->Clone();
   return NULL;
 }
 const std::vector<std::string> SettingsOverridesHandler::Keys() const {
   return SingleKey(manifest_keys::kSettingsOverride);
 }
 
 }  // namespace extensions