Make ShortcutsBackend a ProfileKeyedService.

chrome/browser/profiles/profile.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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_H_
 #pragma once
 
@@ skipping 236 matching lines @@
   // process may decide to shut down).
   //
   // |access| defines what the caller plans to do with the service. See
   // the ServiceAccessType definition above.
   virtual HistoryService* GetHistoryService(ServiceAccessType access) = 0;
 
   // Similar to GetHistoryService(), but won't create the history service if it
   // doesn't already exist.
   virtual HistoryService* GetHistoryServiceWithoutCreating() = 0;
 
-  // Returns the ShortcutsBackend for this profile. This is owned by
-  // the Profile and created on the first call. Callers that outlive the life of
-  // this profile need to be sure they refcount the returned value.
-  virtual history::ShortcutsBackend* GetShortcutsBackend() = 0;
-
   // Returns the PolicyService that provides policies for this profile.
   virtual policy::PolicyService* GetPolicyService() = 0;
 
   // Retrieves a pointer to the PrefService that manages the preferences
   // for this user profile.
   virtual PrefService* GetPrefs() = 0;
 
   // Retrieves a pointer to the PrefService that manages the preferences
   // for OffTheRecord Profiles.  This PrefService is lazily created the first
   // time that this method is called.
@@ skipping 172 matching lines @@
 struct hash<Profile*> {
   std::size_t operator()(Profile* const& p) const {
     return reinterpret_cast<std::size_t>(p);
   }
 };
 
 }  // namespace BASE_HASH_NAMESPACE
 #endif
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_H_