Split Blacklist from ExtensionSystem.

chrome/browser/extensions/blacklist.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 CHROME_BROWSER_EXTENSIONS_BLACKLIST_H_
 #define CHROME_BROWSER_EXTENSIONS_BLACKLIST_H_
 
 #include <list>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/safe_browsing/database_manager.h"
+#include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "extensions/browser/blacklist_state.h"
 
+namespace content {
+class BrowserContext;
+}
+
 namespace extensions {
 
 class BlacklistStateFetcher;
 class Extension;
 class ExtensionPrefs;
 
 // The blacklist of extensions backed by safe browsing.
-class Blacklist : public content::NotificationObserver,
+class Blacklist : public KeyedService,
+                  public content::NotificationObserver,
                   public base::SupportsWeakPtr<Blacklist> {
  public:
   class Observer {
    public:
     // Observes |blacklist| on construction and unobserves on destruction.
     explicit Observer(Blacklist* blacklist);
 
     virtual void OnBlacklistUpdated() = 0;
 
    protected:
@@ skipping 23 matching lines @@
 
   typedef base::Callback<void(const std::set<std::string>&)>
       GetMalwareIDsCallback;
 
   typedef base::Callback<void(BlacklistState)> IsBlacklistedCallback;
 
   explicit Blacklist(ExtensionPrefs* prefs);
 
   ~Blacklist() override;
 
+  static Blacklist* Get(content::BrowserContext* context);
+
   // From the set of extension IDs passed in via |ids|, asynchronously checks
   // which are blacklisted and includes them in the resulting map passed
   // via |callback|, which will be sent on the caller's message loop. The values
   // of the map are the blacklist state for each extension. Extensions with
   // a BlacklistState of NOT_BLACKLISTED are not included in the result.
   //
   // For a synchronous version which ONLY CHECKS CURRENTLY INSTALLED EXTENSIONS
   // see ExtensionPrefs::IsExtensionBlacklisted.
   void GetBlacklistedIDs(const std::set<std::string>& ids,
                          const GetBlacklistedIDsCallback& callback);
@@ skipping 61 matching lines @@
   // GetBlacklistedIDs and deleted when the callback is called from
   // OnBlacklistStateReceived.
   StateRequestsList state_requests_;
 
   DISALLOW_COPY_AND_ASSIGN(Blacklist);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_BLACKLIST_H_