Convert multiple boolean params to mask in getExtensionByIdInternal.

chrome/browser/extensions/extension_service.h

 // Copyright (c) 2012 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_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 651 matching lines @@
       const;
 
   // Handles setting the extension specific values in |extension_sync_data| to
   // the current system.
   // Returns false if the changes were not completely applied and need to be
   // tried again later.
   bool ProcessExtensionSyncDataHelper(
       const extensions::ExtensionSyncData& extension_sync_data,
       syncer::ModelType type);
 
+  enum IncludeFlag {
+    INCLUDE_NONE = 0,
+    INCLUDE_ENABLED = 1 << 0,
+    INCLUDE_DISABLED = 1 << 1,
+    INCLUDE_TERMINATED = 1 << 2
+  };
+
   // Look up an extension by ID, optionally including either or both of enabled
   // and disabled extensions.
   const extensions::Extension* GetExtensionByIdInternal(
       const std::string& id,
-      bool include_enabled,
-      bool include_disabled,
-      bool include_terminated) const;
+      int include_mask) const;
 
   // Adds the given extension to the list of terminated extensions if
   // it is not already there and unloads it.
   void TrackTerminatedExtension(const extensions::Extension* extension);
 
   // Removes the extension with the given id from the list of
   // terminated extensions if it is there.
   void UntrackTerminatedExtension(const std::string& id);
 
   // Handles sending notification that |extension| was loaded.
@@ skipping 174 matching lines @@
 #endif
 
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsWithUnlimtedStorage);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsAndCheckStorageProtection);
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_