Restore KeyedServiceFactory diagnostics for context use-after-destroy.

extensions/browser/process_manager.h

 // Copyright 2013 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 EXTENSIONS_BROWSER_PROCESS_MANAGER_H_
 #define EXTENSIONS_BROWSER_PROCESS_MANAGER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 39 matching lines @@
                        public content::NotificationObserver,
                        public ExtensionRegistryObserver,
                        public EventPageTracker,
                        public content::DevToolsAgentHostObserver {
  public:
   using ExtensionHostSet = std::set<extensions::ExtensionHost*>;
 
   static ProcessManager* Get(content::BrowserContext* context);
   ~ProcessManager() override;
 
+  // KeyedService support:
+  void Shutdown() override;
+
   void RegisterRenderFrameHost(content::WebContents* web_contents,
                                content::RenderFrameHost* render_frame_host,
                                const Extension* extension);
   void UnregisterRenderFrameHost(content::RenderFrameHost* render_frame_host);
   void DidNavigateRenderFrameHost(content::RenderFrameHost* render_frame_host);
 
   // Returns the SiteInstance that the given URL belongs to.
   // TODO(aa): This only returns correct results for extensions and packaged
   // apps, not hosted apps.
   virtual scoped_refptr<content::SiteInstance> GetSiteInstanceForURL(
@@ skipping 268 matching lines @@
 
   // Must be last member, see doc on WeakPtrFactory.
   base::WeakPtrFactory<ProcessManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_PROCESS_MANAGER_H_