Convert string16 to base::string16 in content.

content/browser/plugin_service_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/browser/plugin_service_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
@@ skipping 529 matching lines @@
        ++it) {
     if (it->path == plugin_path) {
       *info = *it;
       return true;
     }
   }
 
   return false;
 }
 
-string16 PluginServiceImpl::GetPluginDisplayNameByPath(
+base::string16 PluginServiceImpl::GetPluginDisplayNameByPath(
     const base::FilePath& path) {
-  string16 plugin_name = path.LossyDisplayName();
+  base::string16 plugin_name = path.LossyDisplayName();
   WebPluginInfo info;
   if (PluginService::GetInstance()->GetPluginInfoByPath(path, &info) &&
       !info.name.empty()) {
     plugin_name = info.name;
 #if defined(OS_MACOSX)
     // Many plugins on the Mac have .plugin in the actual name, which looks
     // terrible, so look for that and strip it off if present.
     const std::string kPluginExtension = ".plugin";
     if (EndsWith(plugin_name, ASCIIToUTF16(kPluginExtension), true))
       plugin_name.erase(plugin_name.length() - kPluginExtension.length());
@@ skipping 256 matching lines @@
           window, kPluginVersionAtomProperty, plugin_version);
   return true;
 }
 
 bool PluginServiceImpl::IsPluginWindow(HWND window) {
   return gfx::GetClassName(window) == base::string16(kNativeWindowClassName);
 }
 #endif
 
 }  // namespace content