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 "base/containers/scoped_ptr_hash_map.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 66 matching lines @@
   // from the command line, or when loaded as an unpacked extension).
   bool BlacklistedByDefault() const;
 
   // Returns installation mode for an extension.
   InstallationMode GetInstallationMode(const ExtensionId& id) 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.

[Finnur, 2014/10/06 14:01:42]

I don't get it... 
GetRecommendedInstallList is like GetRecommendedInstallList?

[binjin, 2014/10/06 18:48:47]

Ooops, it's a mistake due to auto-completion. Done.

+  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) const;
 
   // Returns true if an extension with manifest type |manifest_type| is
   // allowed to be installed.
   bool IsAllowedManifestType(Manifest::Type manifest_type) const;
@@ skipping 76 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_