Fix default value of ExtensionManagement::IndividualSettings

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 46 matching lines @@
     INSTALLATION_BLOCKED,
     INSTALLATION_FORCED,
     INSTALLATION_RECOMMENDED,
   };
 
   // Class to hold extension management settings for one or a group of
   // extensions. Settings can be applied to an individual extension identified
   // by an ID, a group of extensions with specific |update_url| or all
   // extensions at once.
   struct IndividualSettings {
+    IndividualSettings();
+    ~IndividualSettings();
+
     void Reset();
 
     // Extension installation mode. Setting this to INSTALLATION_FORCED or
     // INSTALLATION_RECOMMENDED will enable extension auto-loading (only
     // applicable to single extension), and in this case the |update_url| must
     // be specified, containing the update URL for this extension.
     // Note that |update_url| will be ignored for INSTALLATION_ALLOWED and
     // INSTALLATION_BLOCKED installation mode.
+    // These settings will override the default settings, and unspecified
+    // settings will take value from default settings.
     InstallationMode installation_mode;
     std::string update_url;
   };
 
   // Global extension management settings, applicable to all extensions.
   struct GlobalSettings {
     GlobalSettings();
     ~GlobalSettings();
 
     void Reset();
@@ skipping 110 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_