Add base:: namespace to string16 in chrome/browser/extensions.

chrome/browser/extensions/extension_message_bubble_controller.cc

 // Copyright (c) 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/browser/extensions/extension_message_bubble_controller.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_message_bubble.h"
@@ skipping 26 matching lines @@
 }
 
 bool ExtensionMessageBubbleController::ShouldShow() {
   if (has_notified_)
     return false;
 
   has_notified_ = true;
   return !GetOrCreateExtensionList()->empty();
 }
 
-std::vector<string16>
+std::vector<base::string16>
 ExtensionMessageBubbleController::GetExtensionList() {
   ExtensionIdList* list = GetOrCreateExtensionList();
   if (list->empty())
-    return std::vector<string16>();
+    return std::vector<base::string16>();
 
-  std::vector<string16> return_value;
+  std::vector<base::string16> return_value;
   for (ExtensionIdList::const_iterator it = list->begin();
        it != list->end(); ++it) {
     const Extension* extension = service_->GetInstalledExtension(*it);
     if (extension) {
       return_value.push_back(UTF8ToUTF16(extension->name()));
     } else {
       return_value.push_back(
           ASCIIToUTF16(std::string("(unknown name) ") + *it));
       // TODO(finnur): Add this as a string to the grd, for next milestone.
     }
@@ skipping 81 matching lines @@
     }
 
     delegate_->LogExtensionCount(extension_list_.size());
     initialized_ = true;
   }
 
   return &extension_list_;
 }
 
 }  // namespace extensions