Added HALF, FULLSCREEN_ALL_APPS, and FULLSCREEN_SEARCH.

chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.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/app_list/app_list_presenter_delegate_mus.h"
 
 #include "ui/app_list/presenter/app_list_presenter_impl.h"
 #include "ui/app_list/presenter/app_list_view_delegate_factory.h"
 #include "ui/app_list/views/app_list_view.h"
 #include "ui/display/display.h"
@@ skipping 39 matching lines @@
 }
 
 app_list::AppListViewDelegate* AppListPresenterDelegateMus::GetViewDelegate() {
   return view_delegate_factory_->GetDelegate();
 }
 
 void AppListPresenterDelegateMus::Init(app_list::AppListView* view,
                                        int64_t display_id,
                                        int current_apps_page) {
   view_ = view;
-
+  // TODO(newcomer): replace Initialize parameters with proper mus
+  // implementation as per crbug.com/726838
   // Note: This would place the app list into the USER_WINDOWS container, unlike
   // in classic ash, where it has it's own container.
   // TODO(mfomitchev): We are currently passing NULL for |parent|. It seems like
   // the only thing this is used for is choosing the right scale factor in
   // AppListMainView::PreloadIcons(), so we take care of that - perhaps by
   // passing the display_id or the scale factor directly
-  view->Initialize(nullptr /* parent */, current_apps_page);
+  view->Initialize(nullptr /* parent */, current_apps_page, false, false);
 
   view->MaybeSetAnchorPoint(
       GetCenterOfDisplay(display_id, GetMinimumBoundsHeightForAppList(view)));
 
   // TODO(mfomitchev): Setup updating bounds on keyboard bounds change.
   // TODO(mfomitchev): Setup dismissing on maximize (touch-view) mode start/end.
   // TODO(mfomitchev): Setup DnD.
   // TODO(mfomitchev): UpdateAutoHideState for shelf
 }
 
@@ skipping 26 matching lines @@
 void AppListPresenterDelegateMus::OnPointerEventObserved(
     const ui::PointerEvent& event,
     const gfx::Point& location_in_screen,
     views::Widget* target) {
   // Dismiss app list on a mouse click or touch outside of the app list window.
   if ((event.type() == ui::ET_TOUCH_PRESSED ||
        event.type() == ui::ET_POINTER_DOWN) &&
       (!target || (view_ && (target != view_->GetWidget()))))
     presenter_->Dismiss();
 }