Add commandline flag for service workers.

content/browser/renderer_host/render_process_host_impl.cc

 // 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 926 matching lines @@
     switches::kEnableLogging,
     switches::kEnableMP3StreamParser,
     switches::kEnableMemoryBenchmarking,
     switches::kEnableOpusPlayback,
     switches::kEnableOverlayFullscreenVideo,
     switches::kEnableOverlayScrollbars,
     switches::kEnableOverscrollNotifications,
     switches::kEnablePinch,
     switches::kEnablePreparsedJsCaching,
     switches::kEnablePruneGpuCommandBuffers,
+    switches::kEnableServiceWorker,
     switches::kEnableSkiaBenchmarking,
     switches::kEnableSoftwareCompositing,
     switches::kEnableSpeechSynthesis,
     switches::kEnableStatsTable,
     switches::kEnableStrictSiteIsolation,
     switches::kEnableThreadedCompositing,
     switches::kEnableUniversalAcceleratedOverflowScroll,
     switches::kEnableTouchDragDrop,
     switches::kEnableTouchEditing,
     switches::kEnableViewport,
@@ skipping 845 matching lines @@
     // Skip widgets in other processes.
     if (widget->GetProcess()->GetID() != GetID())
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
     rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }
 
 }  // namespace content