Fix DevToolsBeforeUnloadTest and BrowserCloseManagerBrowserTest.

content/browser/renderer_host/render_widget_host_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_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 141 matching lines @@
   void ForwardMouseEvent(const blink::WebMouseEvent& mouse_event) override;
   void ForwardWheelEvent(const blink::WebMouseWheelEvent& wheel_event) override;
   void ForwardKeyboardEvent(const NativeWebKeyboardEvent& key_event) override;
   void ForwardGestureEvent(
       const blink::WebGestureEvent& gesture_event) override;
   RenderProcessHost* GetProcess() const override;
   int GetRoutingID() const override;
   RenderWidgetHostViewBase* GetView() const override;
   bool IsLoading() const override;
   void RestartHangMonitorTimeoutIfNecessary() override;
-  void DisableHangMonitorForTesting() override;
   void SetIgnoreInputEvents(bool ignore_input_events) override;
   void WasResized() override;
   void AddKeyPressEventCallback(const KeyPressEventCallback& callback) override;
   void RemoveKeyPressEventCallback(
       const KeyPressEventCallback& callback) override;
   void AddMouseEventCallback(const MouseEventCallback& callback) override;
   void RemoveMouseEventCallback(const MouseEventCallback& callback) override;
   void AddInputEventObserver(
       RenderWidgetHost::InputEventObserver* observer) override;
   void RemoveInputEventObserver(
@@ skipping 761 matching lines @@
   float last_device_scale_factor_;
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_