Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/extension_webui_apitest.cc

 // 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.
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 137 matching lines @@
 }
 
 // Tests chrome.runtime.onMessage, which exercises WebUI registering and
 // receiving an event.
 IN_PROC_BROWSER_TEST_F(ExtensionWebUITest, OnMessage) {
   ASSERT_TRUE(RunTestOnExtensionsFrame("on_message.js"));
 
   OnMessage::Info info;
   info.data = "hi";
   info.last_message = true;
-  EventRouter::Get(profile())->BroadcastEvent(make_scoped_ptr(
-      new Event(OnMessage::kEventName, OnMessage::Create(info))));
+  EventRouter::Get(profile())->BroadcastEvent(make_scoped_ptr(new Event(
+      events::UNKNOWN, OnMessage::kEventName, OnMessage::Create(info))));
 
   scoped_ptr<ExtensionTestMessageListener> listener(
       new ExtensionTestMessageListener(false));
   ASSERT_TRUE(listener->WaitUntilSatisfied());
   EXPECT_EQ("true", listener->message());
 }
 
 // Tests chrome.runtime.lastError, which exercises WebUI accessing a property
 // on an API which it doesn't actually have access to. A bindings test really.
 IN_PROC_BROWSER_TEST_F(ExtensionWebUITest, RuntimeLastError) {
@@ skipping 67 matching lines @@
 
   ASSERT_TRUE(listener->WaitUntilSatisfied());
   listener->Reply(extension_id);
   listener.reset(new ExtensionTestMessageListener("createfailed", false));
   ASSERT_TRUE(listener->WaitUntilSatisfied());
 }
 
 }  // namespace
 
 }  // namespace extensions