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

chrome/browser/task_manager/extension_process_resource_provider.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/browser/task_manager/extension_process_resource_provider.h"
 
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 69 matching lines @@
 ExtensionProcessResource::ExtensionProcessResource(
     content::RenderViewHost* render_view_host)
     : render_view_host_(render_view_host) {
   if (!default_icon_) {
     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
     default_icon_ = rb.GetImageSkiaNamed(IDR_PLUGINS_FAVICON);
   }
   process_handle_ = render_view_host_->GetProcess()->GetHandle();
   unique_process_id_ = render_view_host->GetProcess()->GetID();
   pid_ = base::GetProcId(process_handle_);
-  base::string16 extension_name = UTF8ToUTF16(GetExtension()->name());
+  base::string16 extension_name = base::UTF8ToUTF16(GetExtension()->name());
   DCHECK(!extension_name.empty());
 
   Profile* profile = Profile::FromBrowserContext(
       render_view_host->GetProcess()->GetBrowserContext());
   int message_id = util::GetMessagePrefixID(
       GetExtension()->is_app(),
       true,  // is_extension
       profile->IsOffTheRecord(),
       false,  // is_prerender
       false,  // is_instant_overlay
@@ skipping 233 matching lines @@
   task_manager_->RemoveResource(resource);
 
   // Remove it from the provider.
   resources_.erase(iter);
 
   // Finally, delete the resource.
   delete resource;
 }
 
 }  // namespace task_manager