Set up the infrastructure for Extension event metrics.

chrome/browser/chromeos/launcher_search_provider/service.cc

 // Copyright 2015 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/chromeos/launcher_search_provider/service.h"
 
 #include "base/memory/scoped_vector.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/file_manager/app_id.h"
 #include "chrome/browser/chromeos/launcher_search_provider/service_factory.h"
@@ skipping 43 matching lines @@
   extensions::EventRouter* event_router =
       extensions::EventRouter::Get(profile_);
 
   CacheListenerExtensionIds();
   for (const ExtensionId extension_id : *cached_listener_extension_ids_.get()) {
     // Convert query_id_ to string here since queryId is defined as string in
     // javascript side API while we use uint32 internally to generate it.
     event_router->DispatchEventToExtension(
         extension_id,
         make_scoped_ptr(new extensions::Event(
+            extensions::events::UNKNOWN,
             api_launcher_search_provider::OnQueryStarted::kEventName,
             api_launcher_search_provider::OnQueryStarted::Create(
                 query_id_, query, max_result))));
   }
 }
 
 void Service::OnQueryEnded() {
   DCHECK(is_query_running_);
   provider_ = nullptr;
 
   extensions::EventRouter* event_router =
       extensions::EventRouter::Get(profile_);
 
   CacheListenerExtensionIds();
   for (const ExtensionId extension_id : *cached_listener_extension_ids_.get()) {
     event_router->DispatchEventToExtension(
         extension_id,
         make_scoped_ptr(new extensions::Event(
+            extensions::events::UNKNOWN,
             api_launcher_search_provider::OnQueryEnded::kEventName,
             api_launcher_search_provider::OnQueryEnded::Create(query_id_))));
   }
 
   is_query_running_ = false;
 }
 
 void Service::OnOpenResult(const ExtensionId& extension_id,
                            const std::string& item_id) {
   CacheListenerExtensionIds();
   CHECK(ContainsValue(*cached_listener_extension_ids_.get(), extension_id));
 
   extensions::EventRouter* event_router =
       extensions::EventRouter::Get(profile_);
   event_router->DispatchEventToExtension(
       extension_id,
       make_scoped_ptr(new extensions::Event(
+          extensions::events::UNKNOWN,
           api_launcher_search_provider::OnOpenResult::kEventName,
           api_launcher_search_provider::OnOpenResult::Create(item_id))));
 }
 
 void Service::SetSearchResults(
     const extensions::Extension* extension,
     scoped_ptr<ErrorReporter> error_reporter,
     const int query_id,
     const std::vector<linked_ptr<
         extensions::api::launcher_search_provider::SearchResult>>& results) {
@@ skipping 65 matching lines @@
            app_list::switches::IsDriveSearchEnabled()) ||
           (extension->id() != file_manager::kFileManagerAppId &&
            app_list::switches::IsLauncherSearchProviderApiEnabled()))
         cached_listener_extension_ids_->insert(extension->id());
     }
   }
 }
 
 }  // namespace launcher_search_provider
 }  // namespace chromeos