FilePath: Remove most of ToWStringHack, adding a LossyDisplayName()

chrome/plugin/chrome_plugin_host.cc

Index: chrome/plugin/chrome_plugin_host.cc
diff --git a/chrome/plugin/chrome_plugin_host.cc b/chrome/plugin/chrome_plugin_host.cc
index 690bf05f18e6805f6e6c8349b8014220ad89772e..bb9fbee7531059cdb7ff005e5e1b1f2d5e7e68bb 100644
--- a/chrome/plugin/chrome_plugin_host.cc
+++ b/chrome/plugin/chrome_plugin_host.cc
@@ -436,8 +436,10 @@ int STDCALL CPB_GetBrowsingContextInfo(
     FilePath path = CommandLine::ForCurrentProcess()->
                     GetSwitchValuePath(switches::kPluginDataDir);
     DCHECK(!path.empty());
-    std::string retval = WideToUTF8(
-        path.Append(chrome::kChromePluginDataDirname).ToWStringHack());
+    // TODO(evan): this is wrong.  We can't stuff a path through a UTF-8 string.
+    // But this code is only used by Gears, which will be removed eventually.
+    std::string retval = UTF16ToUTF8(
+        path.Append(chrome::kChromePluginDataDirname).LossyDisplayName());
     *static_cast<char**>(buf) = CPB_StringDup(CPB_Alloc, retval);
 
     return CPERR_SUCCESS;