Add recommended extension installation support

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 <map>
 #include <string>
 #include <vector>
@@ skipping 91 matching lines @@
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Get the ManagementPolicy::Provider controlled by extension management
   // policy settings.
   ManagementPolicy::Provider* GetProvider();
 
   // Checks if extensions are blacklisted by default, by policy. When true,
   // this means that even extensions without an ID should be blacklisted (e.g.
   // from the command line, or when loaded as an unpacked extension).
-  bool BlacklistedByDefault();
+  bool BlacklistedByDefault() const;
 
   // Returns the force install list, in format specified by
   // ExternalPolicyLoader::AddExtension().
   scoped_ptr<base::DictionaryValue> GetForceInstallList() const;
 
+  // Like GetRecommendedInstallList(), but returns recommended install list
+  // instead.
+  scoped_ptr<base::DictionaryValue> GetRecommendedInstallList() const;
+
   // Returns if an extension with id |id| is allowed to install or not.
   bool IsInstallationAllowed(const ExtensionId& id) const;
 
   // Returns true if an extension download should be allowed to proceed.
   bool IsOffstoreInstallAllowed(const GURL& url, const GURL& referrer_url);
 
   // Helper function to read |settings_by_id_| with |id| as key. Returns a
   // constant reference to default settings if |id| does not exist.
   const IndividualSettings& ReadById(const ExtensionId& id) const;
 
@@ skipping 67 matching lines @@
       content::BrowserContext* context) const OVERRIDE;
   virtual void RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable* registry) OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionManagementFactory);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MANAGEMENT_H_