Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/extensions/api/mdns/mdns_api.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/extensions/api/mdns/mdns_api.h"
 
 #include <vector>
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/common/extensions/api/mdns.h"
+#include "extensions/browser/extension_system.h"
 
 namespace extensions {
 
 namespace mdns = api::mdns;
 
 namespace {
 
 // Whitelisted mDNS service types.
 const char kCastServiceType[] = "_googlecast._tcp.local";
 const char kPrivetServiceType[] = "_privet._tcp.local";
@@ skipping 122 matching lines @@
 
   VLOG(1) << "Broadcasting OnServiceList event: " << event.get();
 
   // TODO(justinlin): To avoid having listeners without filters getting all
   // events, modify API to have this event require filters.
   extensions::ExtensionSystem::Get(profile_)->event_router()->
       BroadcastEvent(event.Pass());
 }
 
 }  // namespace extensions