Fix fullscreen on ChromeOS.

plugin/linux/main_linux.cc

 /*
  * Copyright 2009, 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 898 matching lines @@
       // The return value is for whether we handled the event, not whether it
       // was successful, so return TRUE event for error.
       return TRUE;
     }
     SetGtkEventSource(gtk_fullscreen_container_);
   }
   renderer()->Resize(configure_event->width, configure_event->height);
   client()->SendResizeEvent(renderer()->width(), renderer()->height(),
                             true);
   fullscreen_ = true;
-  return TRUE;
+  // Return false here so that the default handler in GTK will still be invoked.
+  return FALSE;
 }
 
 gboolean PluginObject::OnGtkDelete(GtkWidget *widget,
                                    GdkEvent *event) {
   DLOG_ASSERT(widget == gtk_fullscreen_container_);
   CancelFullscreenDisplay();
   return TRUE;
 }
 
 bool PluginObject::GetDisplayMode(int id, o3d::DisplayMode *mode) {
@@ skipping 72 matching lines @@
   client()->SendResizeEvent(renderer()->width(), renderer()->height(),
                             false);
   SetGtkEventSource(gtk_container_);
   gtk_widget_destroy(gtk_fullscreen_container_);
   gtk_fullscreen_container_ = NULL;
   fullscreen_window_ = 0;
   fullscreen_ = false;
 }
 }  // namespace _o3d
 }  // namespace glue