Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/api/processes/processes_api.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.
 
 #include "chrome/browser/extensions/api/processes/processes_api.h"
 
 #include "base/callback.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/location.h"
@@ skipping 451 matching lines @@
   DispatchEvent(keys::kOnExited, args.Pass());
 #endif  // defined(ENABLE_TASK_MANAGER)
 }
 
 void ProcessesEventRouter::DispatchEvent(
     const std::string& event_name,
     scoped_ptr<base::ListValue> event_args) {
   EventRouter* event_router = EventRouter::Get(browser_context_);
   if (event_router) {
     scoped_ptr<extensions::Event> event(new extensions::Event(
-        event_name, event_args.Pass()));
+        extensions::events::UNKNOWN, event_name, event_args.Pass()));
     event_router->BroadcastEvent(event.Pass());
   }
 }
 
 bool ProcessesEventRouter::HasEventListeners(const std::string& event_name) {
   EventRouter* event_router = EventRouter::Get(browser_context_);
   return event_router && event_router->HasEventListener(event_name);
 }
 
 ProcessesAPI::ProcessesAPI(content::BrowserContext* context)
@@ skipping 279 matching lines @@
 
   SetResult(processes);
   SendResponse(true);
 
   // Balance the AddRef in the RunAsync.
   Release();
 #endif  // defined(ENABLE_TASK_MANAGER)
 }
 
 }  // namespace extensions