Disables tooltips if we can't create the tooltip window. I still don't

views/widget/native_widget_win.cc

Index: views/widget/native_widget_win.cc
diff --git a/views/widget/native_widget_win.cc b/views/widget/native_widget_win.cc
index 599bdd5f23dabd88236d62b6fa8b5d3ca5699971..d058be5b397458e78d329e3b83fe0d7685d01c5e 100644
--- a/views/widget/native_widget_win.cc
+++ b/views/widget/native_widget_win.cc
@@ -1162,6 +1162,10 @@ LRESULT NativeWidgetWin::OnCreate(CREATESTRUCT* create_struct) {
   } else {
     tooltip_manager_.reset(new TooltipManagerWin(GetWidget()));
   }
+  if (!tooltip_manager_->Init()) {

[Ben Goodger (Google), 2011/06/13 17:26:17]

You might note the mystery of why this check exists, even if you have no
explanation.

+    LOG_GETLASTERROR(WARNING) << "tooltip creation failed, disabling tooltips";
+    tooltip_manager_.reset();
+  }
 
   // This message initializes the window so that focus border are shown for
   // windows.
@@ -1478,7 +1482,8 @@ LRESULT NativeWidgetWin::OnMouseRange(UINT message,
   MouseEvent event(msg);
 
   if (!(event.flags() & ui::EF_IS_NON_CLIENT))
-    tooltip_manager_->OnMouse(message, w_param, l_param);
+    if (tooltip_manager_.get())
+      tooltip_manager_->OnMouse(message, w_param, l_param);
 
   if (event.type() == ui::ET_MOUSE_MOVED && !HasMouseCapture()) {
     // Windows only fires WM_MOUSELEAVE events if the application begins