Use GetSwitchValueASCII.

chrome/browser/plugin_service.cc

Index: chrome/browser/plugin_service.cc
diff --git a/chrome/browser/plugin_service.cc b/chrome/browser/plugin_service.cc
index f9153c6bc1d0f711397fbd20c854739fc6068e31..5f66be93479fa64aa746a461e171d86189d6efb7 100644
--- a/chrome/browser/plugin_service.cc
+++ b/chrome/browser/plugin_service.cc
@@ -54,10 +54,9 @@ PluginService::PluginService()
   ChromePluginLib::RegisterPluginsWithNPAPI();
   // Load the one specified on the command line as well.
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
-  std::wstring path = command_line->GetSwitchValue(switches::kLoadPlugin);
+  FilePath path = command_line->GetSwitchValuePath(switches::kLoadPlugin);
   if (!path.empty()) {
-    NPAPI::PluginList::Singleton()->AddExtraPluginPath(
-        FilePath::FromWStringHack(path));
+    NPAPI::PluginList::Singleton()->AddExtraPluginPath(path);
   }
 #ifndef DISABLE_NACL
   if (command_line->HasSwitch(switches::kInternalNaCl))