We have a problem in the process on destroying WebContentsImpl because

chrome/browser/android/shortcut_helper.cc

 // Copyright 2013 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 "chrome/browser/android/shortcut_helper.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 96 matching lines @@
 bool ShortcutBuilder::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ShortcutBuilder, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_DidRetrieveWebappInformation,
                         OnDidRetrieveWebappInformation)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
-void ShortcutBuilder::WebContentsDestroyed(content::WebContents* web_contents) {
+void ShortcutBuilder::WebContentsDestroyed() {
   Destroy();
 }
 
 void ShortcutBuilder::Destroy() {
   if (cancelable_task_tracker_.HasTrackedTasks()) {
     cancelable_task_tracker_.TryCancelAll();
   }
   delete this;
 }
 
@@ skipping 76 matching lines @@
                         jclass clazz,
                         jlong tab_android_ptr,
                         jstring title,
                         jint launcher_large_icon_size) {
   TabAndroid* tab = reinterpret_cast<TabAndroid*>(tab_android_ptr);
   ShortcutHelper::AddShortcut(
       tab->web_contents(),
       base::android::ConvertJavaStringToUTF16(env, title),
       launcher_large_icon_size);
 }