Merge ShelfItemDelegate::ItemSelected & LauncherItemDelegate::Activate.

chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc

 // Copyright 2016 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/ui/ash/launcher/arc_app_window_launcher_item_controller.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
@@ skipping 17 matching lines @@
 }
 
 void ArcAppWindowLauncherItemController::RemoveTaskId(int task_id) {
   task_ids_.erase(task_id);
 }
 
 bool ArcAppWindowLauncherItemController::HasAnyTasks() const {
   return !task_ids_.empty();
 }
 
-ash::ShelfItemDelegate::PerformedAction
-ArcAppWindowLauncherItemController::ItemSelected(const ui::Event& event) {
+ash::ShelfAction ArcAppWindowLauncherItemController::ItemSelected(
+    ui::EventType event_type,
+    int event_flags,
+    int64_t display_id,
+    ash::ShelfLaunchSource source) {
   if (window_count()) {
-    return AppWindowLauncherItemController::ItemSelected(event);
-  } else {
-    if (task_ids_.empty()) {
-      NOTREACHED();
-      return kNoAction;
-    }
-    arc::SetTaskActive(*task_ids_.begin());
-    return kNewWindowCreated;
+    return AppWindowLauncherItemController::ItemSelected(
+        event_type, event_flags, display_id, source);
   }
+
+  if (task_ids_.empty()) {
+    NOTREACHED();
+    return ash::kNoAction;
+  }
+  arc::SetTaskActive(*task_ids_.begin());
+  return ash::kNewWindowCreated;
 }
 
 ash::ShelfAppMenuItemList ArcAppWindowLauncherItemController::GetAppMenuItems(
     int event_flags) {
   ash::ShelfAppMenuItemList items;
   base::string16 app_title = LauncherControllerHelper::GetAppTitle(
       launcher_controller()->profile(), app_id());
   for (auto it = windows().begin(); it != windows().end(); ++it) {
     // TODO(khmel): resolve correct icon here.
     size_t i = std::distance(windows().begin(), it);
     gfx::Image image;
     aura::Window* window = (*it)->GetNativeWindow();
     items.push_back(base::MakeUnique<ChromeLauncherAppMenuItemV2App>(
         ((window && !window->GetTitle().empty()) ? window->GetTitle()
                                                  : app_title),
         &image, app_id(), launcher_controller(), i));
   }
   return items;
 }