Make the cursor have separate mode for disabled mouse events and invisible.

ui/aura/root_window_host.h

Index: ui/aura/root_window_host.h
diff --git a/ui/aura/root_window_host.h b/ui/aura/root_window_host.h
index 168f2d67f12273933fa320354cdaaf75e2153faa..2a07cea020f3c21064e9ef120c8807d3f3d7f495 100644
--- a/ui/aura/root_window_host.h
+++ b/ui/aura/root_window_host.h
@@ -75,7 +75,8 @@ class AURA_EXPORT RootWindowHost {
   // Queries the mouse's current position relative to the host window and sets
   // it in |location_return|. Returns true if the cursor is within the host
   // window. The position set to |location_return| is constrained within the
-  // host window.
+  // host window. If the cursor is disabled, returns false and (0, 0) is set to
+  // |location_return|.
   // This method is expensive, instead use gfx::Screen::GetCursorScreenPoint().
   virtual bool QueryMouseLocation(gfx::Point* location_return) = 0;