Set up the infrastructure for Extension event metrics.

extensions/browser/api/cast_channel/cast_channel_api.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 "extensions/browser/api/cast_channel/cast_channel_api.h"
 
 #include <limits>
 #include <string>
 
 #include "base/json/json_writer.h"
@@ skipping 494 matching lines @@
 
   ChannelInfo channel_info;
   FillChannelInfo(*socket_, &channel_info);
   channel_info.error_state = error_state;
   ErrorInfo error_info;
   FillErrorInfo(error_state, logger_->GetLastErrors(socket_->id()),
                 &error_info);
 
   scoped_ptr<base::ListValue> results =
       OnError::Create(channel_info, error_info);
-  scoped_ptr<Event> event(new Event(OnError::kEventName, results.Pass()));
+  scoped_ptr<Event> event(
+      new Event(events::UNKNOWN, OnError::kEventName, results.Pass()));
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(ui_dispatch_cb_, socket_->owner_extension_id(),
                  base::Passed(event.Pass())));
 }
 
 void CastChannelOpenFunction::CastMessageHandler::OnMessage(
     const CastMessage& message) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   MessageInfo message_info;
   cast_channel::CastMessageToMessageInfo(message, &message_info);
   ChannelInfo channel_info;
   FillChannelInfo(*socket_, &channel_info);
   VLOG(1) << "Received message " << ParamToString(message_info)
           << " on channel " << ParamToString(channel_info);
 
   scoped_ptr<base::ListValue> results =
       OnMessage::Create(channel_info, message_info);
-  scoped_ptr<Event> event(new Event(OnMessage::kEventName, results.Pass()));
+  scoped_ptr<Event> event(
+      new Event(events::UNKNOWN, OnMessage::kEventName, results.Pass()));
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(ui_dispatch_cb_, socket_->owner_extension_id(),
                  base::Passed(event.Pass())));
 }
 
 void CastChannelOpenFunction::CastMessageHandler::Start() {
 }
 
 CastChannelSetAuthorityKeysFunction::CastChannelSetAuthorityKeysFunction() {
@@ skipping 13 matching lines @@
   std::string& signature = params_->signature;
   if (signature.empty() || keys.empty() ||
       !cast_channel::SetTrustedCertificateAuthorities(keys, signature)) {
     SetError("Unable to set authority keys.");
   }
 
   AsyncWorkCompleted();
 }
 
 }  // namespace extensions