[WIP] make GURL::path() return a StringPiece

content/common/plugin_list.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/common/plugin_list.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 218 matching lines @@
       }
     }
   }
 
   // Add in plugins by url.
   // We do not permit URL-sniff based plugin MIME type overrides aside from
   // the case where the "type" was initially missing.
   // We collected stats to determine this approach isn't a major compat issue,
   // and we defend against content confusion attacks in various cases, such
   // as when the user doesn't have the Flash plugin enabled.
-  std::string path = url.path();
+  base::StringPiece path = url.path();
   std::string::size_type last_dot = path.rfind('.');
   if (last_dot != std::string::npos && mime_type.empty()) {
-    std::string extension =
-        base::ToLowerASCII(base::StringPiece(path).substr(last_dot + 1));
+    std::string extension = base::ToLowerASCII(path.substr(last_dot + 1));
     std::string actual_mime_type;
     for (size_t i = 0; i < plugins_list_.size(); ++i) {
       if (SupportsExtension(plugins_list_[i], extension, &actual_mime_type)) {
         base::FilePath path = plugins_list_[i].path;
         if (visited_plugins.insert(path).second) {
           info->push_back(plugins_list_[i]);
           if (actual_mime_types)
             actual_mime_types->push_back(actual_mime_type);
         }
       }
@@ skipping 43 matching lines @@
                 plugin_path);
   if (it != extra_plugin_paths_.end())
     extra_plugin_paths_.erase(it);
 }
 
 PluginList::~PluginList() {
 }
 
 
 }  // namespace content