Bug 445567 - Disable Cocoa cursor rect handling completely. We don't need it and it messes with our mouse cursor when native view geometry changes. r=smichaud, r=josh

widget/src/cocoa/nsCocoaWindow.mm

@@ -393,6 +393,7 @@ nsresult nsCocoaWindow::CreateNativeWindow(const nsIntRect &aRect,
 
   [mWindow setBackgroundColor:[NSColor whiteColor]];
   [mWindow setContentMinSize:NSMakeSize(60, 60)];
+  [mWindow disableCursorRects];
 
   // setup our notification delegate. Note that setDelegate: does NOT retain.
   mDelegate = [[WindowDelegate alloc] initWithGeckoWindow:this];