Add minimum version to extension management

chrome/browser/extensions/extension_management.h

 // Copyright 2014 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_MANAGEMENT_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_MANAGEMENT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 103 matching lines @@
   APIPermissionSet GetBlockedAPIPermissions(const Extension* extension) const;
 
   // Returns blocked permission set for |extension|.
   scoped_refptr<const PermissionSet> GetBlockedPermissions(
       const Extension* extension) const;
 
   // Returns true if every permission in |perms| is allowed for |extension|.
   bool IsPermissionSetAllowed(const Extension* extension,
                               scoped_refptr<const PermissionSet> perms) const;
 
+  // Returns true if |extension| meets the minimum required version set for it.
+  // If there is no such requirement set for it, returns true as well.
+  // If false is returned and |required_version| is not null, set it to the
+  // minimum required version as string.

[Finnur, 2014/11/19 10:16:25]

s/set it to the minimum required version as string/the minimum required version
is returned/

[binjin, 2014/11/19 13:36:10]

Done.

+  bool CheckMinimumVersion(const Extension* extension,
+                           std::string* required_version) const;
+
  private:
   typedef base::ScopedPtrHashMap<ExtensionId, internal::IndividualSettings>
       SettingsIdMap;
   typedef base::ScopedPtrHashMap<std::string, internal::IndividualSettings>
       SettingsUpdateUrlMap;
   friend class ExtensionManagementServiceTest;
 
   // Load all extension management preferences from |pref_service|, and
   // refresh the settings.
   void Refresh();
@@ skipping 67 matching lines @@
       content::BrowserContext* context) const override;
   void RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable* registry) override;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionManagementFactory);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MANAGEMENT_H_