Update webkit/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

webkit/plugins/npapi/webplugin_delegate_impl_gtk.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/plugins/npapi/webplugin_delegate_impl.h"
 
 #include <gtk/gtk.h>
 #include <gdk/gdkx.h>
 
 #include <string>
@@ skipping 158 matching lines @@
   if (window_rect == window_rect_ && clip_rect == clip_rect_)
     return false;
 
   window_rect_ = window_rect;
   clip_rect_ = clip_rect;
 
   return true;
 }
 
 void WebPluginDelegateImpl::WindowedSetWindow() {
-  if (!instance_)
+  if (!instance_.get())
     return;
 
   if (!windowed_handle_) {
     NOTREACHED();
     return;
   }
 
   // See https://bugzilla.mozilla.org/show_bug.cgi?id=108347
   // If we call NPP_SetWindow with a <= 0 width or height, problems arise in
   // Flash (and possibly other plugins).
@@ skipping 554 matching lines @@
     // as someone might be setting the cursor in the main process as well.
     *cursor = current_windowless_cursor_;
   }
 #endif
 
   return ret;
 }
 
 }  // namespace npapi
 }  // namespace webkit