Removing useless Win7 checks + standardize its use

ui/views/win/hwnd_message_handler.cc

Index: ui/views/win/hwnd_message_handler.cc
diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
index 3c67457a6421cc56b0e54216f30d30cdc39db1a3..4f9ad05241a7b18d9d93f493d1c6567bb57c47e5 100644
--- a/ui/views/win/hwnd_message_handler.cc
+++ b/ui/views/win/hwnd_message_handler.cc
@@ -1658,8 +1658,8 @@ LRESULT HWNDMessageHandler::OnPointerActivate(UINT message,
 LRESULT HWNDMessageHandler::OnPointerEvent(UINT message,
                                            WPARAM w_param,
                                            LPARAM l_param) {
-  // WM_POINTER is not supported on Windows 7 or lower.
-  if (base::win::GetVersion() <= base::win::VERSION_WIN7) {
+  // WM_POINTER is not supported on Windows 7.
+  if (base::win::GetVersion() == base::win::VERSION_WIN7) {
     SetMsgHandled(FALSE);
     return -1;
   }