Add a couple of notifications related settings to app/extensions sync:

chrome/browser/extensions/extension_prefs.h

 // Copyright (c) 2011 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_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 153 matching lines @@
   void AcknowledgeOrphanedExtension(const std::string& extension_id);
 
   // Returns true if the extension notification code has already run for the
   // first time for this profile. Currently we use this flag to mean that any
   // extensions that would trigger notifications should get silently
   // acknowledged. This is a fuse. Calling it the first time returns false.
   // Subsequent calls return true. It's not possible through an API to ever
   // reset it. Don't call it unless you mean it!
   bool SetAlertSystemFirstRun();
 
+  // Whether the notifications initial setup is done for the given extension.

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

change "given extension" to "given app" in the comment

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+  bool IsNotificationsInitialSetupDone(const std::string& extension_id) const;
+  void SetNotificationsInitialSetupDone(const std::string& extension_id,

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

Suggest changing names to:

IsAppNotificationSetupDone
SetAppNotificationSetupDone

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+      bool value);
+
+  // Whether notifications are disabled for the given extension.

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

change "given extension" to "given app" in the comment

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+  bool IsNotificationsDisabled(const std::string& extension_id) const;
+  void SetNotificationsDisabled(const std::string& extension_id, bool value);

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

Suggest changing names to:

IsAppNotificationDisabled
SetAppNotificationDisabled

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+
   // Is the extension with |extension_id| allowed by policy (checking both
   // whitelist and blacklist).
   bool IsExtensionAllowedByPolicy(const std::string& extension_id);
 
   // Returns the last value set via SetLastPingDay. If there isn't such a
   // pref, the returned Time will return true for is_null().
   base::Time LastPingDay(const std::string& extension_id) const;
 
   // The time stored is based on the server's perspective of day start time, not
   // the client's.
@@ skipping 238 matching lines @@
   // Deletes the pref dictionary for extension |id|.
   void DeleteExtensionPrefs(const std::string& id);
 
   // Reads a boolean pref from |ext| with key |pref_key|.
   // Return false if the value is false or |pref_key| does not exist.
   static bool ReadBooleanFromPref(const base::DictionaryValue* ext,
                                   const std::string& pref_key);
 
   // Reads a boolean pref |pref_key| from extension with id |extension_id|.
   bool ReadExtensionPrefBoolean(const std::string& extension_id,
-                                const std::string& pref_key);
+                                const std::string& pref_key) const;
 
   // Reads an integer pref from |ext| with key |pref_key|.
   // Return false if the value does not exist.
   static bool ReadIntegerFromPref(const base::DictionaryValue* ext,
                                   const std::string& pref_key,
                                   int* out_value);
 
   // Reads an integer pref |pref_key| from extension with id |extension_id|.
   bool ReadExtensionPrefInteger(const std::string& extension_id,
                                 const std::string& pref_key,
@@ skipping 74 matching lines @@
 
   // Weak pointer, owned by Profile.
   ExtensionPrefValueMap* extension_pref_value_map_;
 
   scoped_refptr<ExtensionContentSettingsStore> content_settings_store_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_