Moved JsonPrefStore to use SequencedWorkerPool

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_
 
 #include <string>
@@ skipping 17 matching lines @@
 class PromoCounter;
 class ProtocolHandlerRegistry;
 class TestingProfile;
 class WebDataService;
 
 namespace android {
 class TabContentsProvider;
 }
 
 namespace base {
+class SequencedTaskRunner;
 class Time;
 }
 
 namespace chrome_browser_net {
 class Predictor;
 }
 
 namespace chromeos {
 class LibCrosServiceLibraryImpl;
 class ResetDefaultProxyConfigServiceTask;
@@ skipping 85 matching lines @@
   // Key used to bind profile to the widget with which it is associated.
   static const char* const kProfileKey;
 
   Profile();
   virtual ~Profile() {}
 
   // Profile prefs are registered as soon as the prefs are loaded for the first
   // time.
   static void RegisterUserPrefs(PrefService* prefs);
 
+  // Gets task runner for I/O operations associated with |profile|.
+  static scoped_refptr<base::SequencedTaskRunner> GetTaskRunnerForProfile(
+      Profile* profile);
+
   // Create a new profile given a path. If |create_mode| is
   // CREATE_MODE_ASYNCHRONOUS then the profile is initialized asynchronously.
   static Profile* CreateProfile(const FilePath& path,
                                 Delegate* delegate,
                                 CreateMode create_mode);
 
   // Returns the profile corresponding to the given browser context.
   static Profile* FromBrowserContext(content::BrowserContext* browser_context);
 
   // Returns the profile corresponding to the given WebUI.
   static Profile* FromWebUI(content::WebUI* web_ui);
 
   // content::BrowserContext implementation ------------------------------------
 
   // Typesafe upcast.
   virtual TestingProfile* AsTestingProfile();
 
+  // Returns sequenced task runner where browser context dependent I/O
+  // operations should be performed.
+  virtual scoped_refptr<base::SequencedTaskRunner> GetIOTaskRunner() = 0;
+
   // Returns the name associated with this profile. This name is displayed in
   // the browser frame.
   virtual std::string GetProfileName() = 0;
 
   // Return the incognito version of this profile. The returned pointer
   // is owned by the receiving profile. If the receiving profile is off the
   // record, the same profile is returned.
   //
   // WARNING: This will create the OffTheRecord profile if it doesn't already
   // exist. If this isn't what you want, you need to check
@@ skipping 227 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_