Allow Registry Iterator functions to use a specified WOW64 mode when iterating.

ui/gfx/font_fallback_win.cc

Index: ui/gfx/font_fallback_win.cc
diff --git a/ui/gfx/font_fallback_win.cc b/ui/gfx/font_fallback_win.cc
index 2e1959b1e802ff8a17ad16b9288209c937cc3e8f..14be83cc95f87e9f95c0abca7d0171c28432f637 100644
--- a/ui/gfx/font_fallback_win.cc
+++ b/ui/gfx/font_fallback_win.cc
@@ -25,7 +25,10 @@ void QueryFontsFromRegistry(std::map<std::string, std::string>* map) {
   const wchar_t* kFonts =
       L"Software\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
 
-  base::win::RegistryValueIterator it(HKEY_LOCAL_MACHINE, kFonts);
+  // This registry key is "shared" between 32-bit and 64-bit hive so safe to
+  // access without any WOW64 access flag. See
+  // http://msdn.microsoft.com/en-us/library/windows/desktop/aa384253.aspx.
+  base::win::RegistryValueIterator it(HKEY_LOCAL_MACHINE, kFonts, 0);
   for (; it.Valid(); ++it) {
     const std::string filename =
         base::StringToLowerASCII(base::WideToUTF8(it.Value()));