Fix crash when destroying a RenderWidgetHost that holds the pointer

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 600 matching lines @@
   void AdjustSelectionByCharacterOffset(int start_adjust, int end_adjust)
       override;
   RenderWidgetHostInputEventRouter* GetInputEventRouter() override;
   void ReplicatePageFocus(bool is_focused) override;
   RenderWidgetHostImpl* GetFocusedRenderWidgetHost(
       RenderWidgetHostImpl* receiving_widget) override;
   void RendererUnresponsive(RenderWidgetHostImpl* render_widget_host) override;
   void RendererResponsive(RenderWidgetHostImpl* render_widget_host) override;
   void RequestToLockMouse(RenderWidgetHostImpl* render_widget_host,
                           bool user_gesture,
-                          bool last_unlocked_by_target) override;
+                          bool last_unlocked_by_target,
+                          bool privileged) override;
   gfx::Rect GetRootWindowResizerRect(
       RenderWidgetHostImpl* render_widget_host) const override;
   bool IsFullscreenForCurrentTab() const override;
   blink::WebDisplayMode GetDisplayMode(
       RenderWidgetHostImpl* render_widget_host) const override;
   void LostCapture(RenderWidgetHostImpl* render_widget_host) override;
   void LostMouseLock(RenderWidgetHostImpl* render_widget_host) override;
+  bool HasMouseLock(RenderWidgetHostImpl* render_widget_host) override;
   void ForwardCompositorProto(RenderWidgetHostImpl* render_widget_host,
                               const std::vector<uint8_t>& proto) override;
   void OnRenderFrameProxyVisibilityChanged(bool visible) override;
   void SendScreenRects() override;
   void OnFirstPaintAfterLoad(RenderWidgetHostImpl* render_widget_host) override;
   TextInputManager* GetTextInputManager() override;
 
   // RenderFrameHostManager::Delegate ------------------------------------------
 
   bool CreateRenderViewForRenderManager(
@@ skipping 791 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_