Fix TextInputClientMac related crashes of Fullscreen RenderWidget

content/browser/web_contents/web_contents_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 693 matching lines @@
                                       bool is_main_frame) override;
   void NotifyMainFrameSwappedFromRenderManager(
       RenderViewHost* old_host,
       RenderViewHost* new_host) override;
   NavigationControllerImpl& GetControllerForRenderManager() override;
   NavigationEntry* GetLastCommittedNavigationEntryForRenderManager() override;
   bool FocusLocationBarByDefault() override;
   void SetFocusToLocationBar(bool select_all) override;
   bool IsHidden() override;
   int GetOuterDelegateFrameTreeNodeId() override;
+  RenderWidgetHostImpl* GetFullscreenRenderWidgetHost() const override;
 
   // NotificationObserver ------------------------------------------------------
 
   void Observe(int type,
                const NotificationSource& source,
                const NotificationDetails& details) override;
 
   // NavigationControllerDelegate ----------------------------------------------
 
   WebContents* GetWebContents() override;
@@ skipping 761 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_