Accepted mouse moved events in NSWindow used for Cocoa full-screen code path....

plugin/mac/fullscreen_window_mac.mm

 /*
  * Copyright 2010, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 428 matching lines @@
   // focus fullscreen; this is the result of [NSScreen mainScreen].
   NSScreen* mainScreen = [[NSScreen screens] objectAtIndex:0];
 
   self = [super initWithContentRect:[mainScreen frame]
                           styleMask:NSBorderlessWindowMask
                             backing:NSBackingStoreBuffered
                               defer:NO
                              screen:mainScreen];
   if (self) {
     owner_ = owner;
+    [self setAcceptsMouseMovedEvents:YES];
     // We need to set ourselves as the delegate in order to receive
     // focus changed notifications.
     [self setDelegate:self];
   }
   return self;
 }
 
 - (BOOL)canBecomeKeyWindow {
   // Needed to receive keyboard events.
   return YES;
@@ skipping 233 matching lines @@
 
 bool FullscreenWindowMac::Shutdown(const GLint* last_buffer_rect) {
 #ifdef O3D_PLUGIN_ENABLE_FULLSCREEN_MSG
   overlay_window_.reset();
 #endif
   return true;
 }
 
 }  // namespace o3d