Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/api/developer_private/developer_private_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/developer_private/developer_private_api.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 323 matching lines @@
 }
 
 void DeveloperPrivateEventRouter::OnExtensionDisableReasonsChanged(
     const std::string& extension_id, int disable_reasons) {
   BroadcastItemStateChanged(developer::EVENT_TYPE_PREFS_CHANGED, extension_id);
 }
 
 void DeveloperPrivateEventRouter::OnExtensionManagementSettingsChanged() {
   scoped_ptr<base::ListValue> args(new base::ListValue());
   args->Append(CreateProfileInfo(profile_)->ToValue());
-  scoped_ptr<Event> event(new Event(
-      developer::OnProfileStateChanged::kEventName, args.Pass()));
+  scoped_ptr<Event> event(
+      new Event(events::UNKNOWN, developer::OnProfileStateChanged::kEventName,
+                args.Pass()));
   event_router_->BroadcastEvent(event.Pass());
 }
 
 void DeveloperPrivateEventRouter::ExtensionWarningsChanged(
     const ExtensionIdSet& affected_extensions) {
   for (const ExtensionId& id : affected_extensions)
     BroadcastItemStateChanged(developer::EVENT_TYPE_WARNINGS_CHANGED, id);
 }
 
 void DeveloperPrivateEventRouter::BroadcastItemStateChanged(
@@ skipping 28 matching lines @@
     // extension info, but since it's an optional field, it's implemented as a
     // scoped ptr, and so ownership between that and the vector of linked ptrs
     // here is, well, messy. Easier to just set it like this.
     dict->SetWithoutPathExpansion("extensionInfo",
                                   infos[0]->ToValue().release());
   }
 
   scoped_ptr<base::ListValue> args(new base::ListValue());
   args->Append(dict.release());
   scoped_ptr<Event> event(new Event(
-      developer::OnItemStateChanged::kEventName, args.Pass()));
+      events::UNKNOWN, developer::OnItemStateChanged::kEventName, args.Pass()));
   event_router_->BroadcastEvent(event.Pass());
 }
 
 void DeveloperPrivateAPI::SetLastUnpackedDirectory(const base::FilePath& path) {
   last_unpacked_directory_ = path;
 }
 
 void DeveloperPrivateAPI::RegisterNotifications() {
   EventRouter::Get(profile_)->RegisterObserver(
       this, developer::OnItemStateChanged::kEventName);
@@ skipping 1026 matching lines @@
         update.extension_id, update.command_name, *update.keybinding);
   }
 
   return RespondNow(NoArguments());
 }
 
 
 }  // namespace api
 
 }  // namespace extensions