Bug 913953 - Part u: Remove unused HWND user data functions; r=ehsan

ipc/chromium/src/base/win_util.cc

@@ -258,16 +258,6 @@ WNDPROC SetWindowProc(HWND hwnd, WNDPROC proc) {
   return oldwindow_proc;
 }
 
-void* SetWindowUserData(HWND hwnd, void* user_data) {
-  return
-      reinterpret_cast<void*>(SetWindowLongPtr(hwnd, GWLP_USERDATA,
-          reinterpret_cast<LONG_PTR>(user_data)));
-}
-
-void* GetWindowUserData(HWND hwnd) {
-  return reinterpret_cast<void*>(GetWindowLongPtr(hwnd, GWLP_USERDATA));
-}
-
 // Maps to the WNDPROC for a window that was active before the subclass was
 // installed.
 static const wchar_t* const kHandlerKey = L"__ORIGINAL_MESSAGE_HANDLER__";

ipc/chromium/src/base/win_util.h

@@ -73,11 +73,6 @@ bool Unsubclass(HWND window, WNDPROC subclass_proc);
 // SubclassWindow.
 WNDPROC GetSuperclassWNDPROC(HWND window);
 
-// Pointer-friendly wrappers around Get/SetWindowLong(..., GWLP_USERDATA, ...)
-// Returns the previously set value.
-void* SetWindowUserData(HWND hwnd, void* user_data);
-void* GetWindowUserData(HWND hwnd);
-
 // Returns true if the shift key is currently pressed.
 bool IsShiftPressed();