Add a few missing "typename"s.

ui/base/dragdrop/os_exchange_data_provider_win.cc

Index: ui/base/dragdrop/os_exchange_data_provider_win.cc
diff --git a/ui/base/dragdrop/os_exchange_data_provider_win.cc b/ui/base/dragdrop/os_exchange_data_provider_win.cc
index 635d124b0d857edba7e82ad3abffeb62a722bffd..d5c5bf58eb3bd7578d6aeef71d1d3f7155740988 100644
--- a/ui/base/dragdrop/os_exchange_data_provider_win.cc
+++ b/ui/base/dragdrop/os_exchange_data_provider_win.cc
@@ -828,12 +828,13 @@ static STGMEDIUM* GetStorageForBytes(const char* data, size_t bytes) {
 
 template<class T>
 static HGLOBAL CopyStringToGlobalHandle(const T& payload) {
-  int bytes = static_cast<int>(payload.size() + 1) * sizeof(T::value_type);
+  int bytes =
+      static_cast<int>(payload.size() + 1) * sizeof(typename T::value_type);
   HANDLE handle = GlobalAlloc(GPTR, bytes);
   void* data = GlobalLock(handle);
   size_t allocated = static_cast<size_t>(GlobalSize(handle));
   memcpy(data, payload.c_str(), allocated);
-  static_cast<T::value_type*>(data)[payload.size()] = '\0';
+  static_cast<typename T::value_type*>(data)[payload.size()] = '\0';
   GlobalUnlock(handle);
   return handle;
 }