content: Use empty() to see if name is not empty.

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 3794 matching lines @@
 
   Send(new ViewHostMsg_FrameTreeUpdated(routing_id_, json));
 }
 
 void RenderViewImpl::CreateFrameTree(WebKit::WebFrame* frame,
                                      DictionaryValue* frame_tree) {
   NavigateToSwappedOutURL(frame);
 
   string16 name;
   if (frame_tree->GetString(content::kFrameTreeNodeNameKey, &name) &&
-      name != string16()) {
+      !name.empty()) {
     frame->setName(name);
   }
 
   int remote_id;
   if (frame_tree->GetInteger(content::kFrameTreeNodeIdKey, &remote_id))
     active_frame_id_map_.insert(std::pair<int, int>(frame->identifier(),
                                                     remote_id));
 
   ListValue* children;
   if (!frame_tree->GetList(content::kFrameTreeNodeSubtreeKey, &children))
@@ skipping 2352 matching lines @@
 
   updating_frame_tree_ = true;
   active_frame_id_map_.clear();
 
   target_process_id_ = process_id;
   target_routing_id_ = route_id;
   CreateFrameTree(webview()->mainFrame(), frames);
 
   updating_frame_tree_ = false;
 }