Fix crash when destroying a RenderWidgetHost that holds the pointer

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index a772de2233d772b37371ce8bba0e63c0a8aadd13..dca061eb4860f88f288e60f3deb76983d3d818f6 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -618,7 +618,8 @@ class CONTENT_EXPORT WebContentsImpl
   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;
@@ -626,6 +627,7 @@ class CONTENT_EXPORT WebContentsImpl
       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;