Reader Mode triggers after tab crash

components/dom_distiller/content/browser/distillability_driver.h

 // Copyright 2015 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 COMPONENTS_DOM_DISTILLER_CONTENT_BROWSER_DISTILLIBILITY_DRIVER_H_
 #define COMPONENTS_DOM_DISTILLER_CONTENT_BROWSER_DISTILLIBILITY_DRIVER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "components/dom_distiller/content/common/distillability_service.mojom.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace dom_distiller {
 
 // This is an IPC helper for determining whether a page should be distilled.
 class DistillabilityDriver
     : public content::WebContentsObserver,
       public content::WebContentsUserData<DistillabilityDriver> {
  public:
   ~DistillabilityDriver() override;
   void CreateDistillabilityService(
       mojo::InterfaceRequest<DistillabilityService> request);
 
   void SetDelegate(const base::Callback<void(bool, bool)>& delegate);
 
   // content::WebContentsObserver implementation.
-  void RenderProcessGone(base::TerminationStatus status) override;
+  void DidStartProvisionalLoadForFrame(
+      content::RenderFrameHost* render_frame_host,
+      const GURL& validated_url,
+      bool is_error_page,
+      bool is_iframe_srcdoc) override;
 
  private:
   explicit DistillabilityDriver(content::WebContents* web_contents);
   friend class content::WebContentsUserData<DistillabilityDriver>;
   friend class DistillabilityServiceImpl;
 
+  void SetupMojoService();
   void OnDistillability(bool distillable, bool is_last);
 
-  // Removes the observer, clears the WebContents member, and removed mojo
-  // service from registry.
-  void CleanUp();
-
   base::Callback<void(bool, bool)> m_delegate_;
 
   base::WeakPtrFactory<DistillabilityDriver> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DistillabilityDriver);
 };
 
 }  // namespace dom_distiller
 
 #endif  // COMPONENTS_DOM_DISTILLER_CONTENT_BROWSER_DISTILLIBILITY_DRIVER_H_