Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/api/streams_private/streams_private_apitest.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 "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 163 matching lines @@
   // has already been called).
   void SendDoneEvent() {
     streams_private::StreamInfo info;
     info.mime_type = "test/done";
     info.original_url = "http://foo";
     info.stream_url = "blob://bar";
     info.tab_id = 10;
     info.expected_content_size = 20;
 
     scoped_ptr<Event> event(
-        new Event(streams_private::OnExecuteMimeTypeHandler::kEventName,
+        new Event(extensions::events::UNKNOWN,
+                  streams_private::OnExecuteMimeTypeHandler::kEventName,
                   streams_private::OnExecuteMimeTypeHandler::Create(info)));
 
     extensions::EventRouter::Get(browser()->profile())
         ->DispatchEventToExtension(test_extension_id_, event.Pass());
   }
 
   // Loads the test extension and set's up its file_browser_handler to handle
   // 'application/msword' and 'text/plain' MIME types.
   // The extension will notify success when it detects an event with the MIME
   // type 'application/msword' and notify fail when it detects an event with the
@@ skipping 285 matching lines @@
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_TRUE(catcher.GetNextResult());
 
   ui_test_utils::NavigateToURL(browser(),
                                test_server_->GetURL("/abort.rtf"));
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_TRUE(catcher.GetNextResult());
 }
 
 }  // namespace