Update component extension reload backoff logic.

chrome/browser/background/background_contents_service.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 CHROME_BROWSER_BACKGROUND_BACKGROUND_CONTENTS_SERVICE_H_
 #define CHROME_BROWSER_BACKGROUND_BACKGROUND_CONTENTS_SERVICE_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/background/background_contents.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/common/window_container_type.h"
 #include "extensions/browser/extension_registry_observer.h"
 #include "net/base/backoff_entry.h"
 #include "ui/base/window_open_disposition.h"
 #include "url/gurl.h"
@@ skipping 182 matching lines @@
   void ShutdownAssociatedBackgroundContents(const base::string16& appid);
 
   // Returns true if this BackgroundContents is in the contents_list_.
   bool IsTracked(BackgroundContents* contents) const;
 
   // Sends out a notification when our association of background contents with
   // apps may have changed (used by BackgroundApplicationListModel to update the
   // set of background apps as new background contents are opened/closed).
   void SendChangeNotification(Profile* profile);
 
+  // Checks whether there has been additional |extension_id| failures. If not,
+  // delete the BackoffEntry corresponding to |extension_id|, if exists.
+  void MaybeClearBackoffEntry(const std::string extension_id,
+                              int expected_failure_count);
+
   // Delay (in ms) before restarting a force-installed extension that crashed.
   static int restart_delay_in_ms_;
 
   // PrefService used to store list of background pages (or NULL if this is
   // running under an incognito profile).
   PrefService* prefs_;
   content::NotificationRegistrar registrar_;
 
   // Information we track about each BackgroundContents.
   struct BackgroundContentsInfo {
     // The BackgroundContents whose information we are tracking.
     BackgroundContents* contents;
     // The name of the top level frame for this BackgroundContents.
     std::string frame_name;
   };
 
   // Map associating currently loaded BackgroundContents with their parent
   // applications.
   // Key: application id
   // Value: BackgroundContentsInfo for the BC associated with that application
   typedef std::map<base::string16, BackgroundContentsInfo>
       BackgroundContentsMap;
   BackgroundContentsMap contents_map_;
 
   // Map associating component extensions that have attempted to reload with a
   // BackoffEntry keeping track of retry timing.
   typedef std::map<extensions::ExtensionId, std::unique_ptr<net::BackoffEntry>>
-      ExtensionBackoffEntryMap;
-  ExtensionBackoffEntryMap backoff_map_;
+      ComponentExtensionBackoffEntryMap;
+  ComponentExtensionBackoffEntryMap component_backoff_map_;
 
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 
+  base::WeakPtrFactory<BackgroundContentsService> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(BackgroundContentsService);
 };
 
 #endif  // CHROME_BROWSER_BACKGROUND_BACKGROUND_CONTENTS_SERVICE_H_