Revert of [Extensions] Migrate ServiceWorker off behavior feature system

extensions/renderer/dispatcher.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 EXTENSIONS_RENDERER_DISPATCHER_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 228 matching lines @@
 
   v8::Local<v8::Object> GetOrCreateBindObjectIfAvailable(
       const std::string& api_name,
       std::string* bind_name,
       ScriptContext* context);
 
   // Requires the GuestView modules in the module system of the ScriptContext
   // |context|.
   void RequireGuestViewModules(ScriptContext* context);
 
+  // Adds features that are specific to the current channel.
+  void AddChannelSpecificFeatures();
+
   // The delegate for this dispatcher. Not owned, but must extend beyond the
   // Dispatcher's own lifetime.
   DispatcherDelegate* delegate_;
 
   // True if the IdleNotification timer should be set.
   bool set_idle_notifications_;
 
   // The IDs of extensions that failed to load, mapped to the error message
   // generated on failure.
   std::map<std::string, std::string> extension_load_errors_;
@@ skipping 45 matching lines @@
   // if this renderer is a WebView guest render process. Otherwise, this will be
   // empty.
   std::string webview_partition_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_H_