Add app_list_presenterr pointer in app_list_presenter_delegate_mus to use dismiss function

chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.cc

Index: chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.cc
diff --git a/chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.cc b/chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.cc
index 979835f6d280510c829273f5b88028e2293c454f..c31aec9bedc50297a1958005384872e7c4b8ee59 100644
--- a/chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.cc
+++ b/chrome/browser/ui/ash/app_list/app_list_presenter_delegate_mus.cc
@@ -3,11 +3,11 @@
 // 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_view_delegate_factory.h"
 #include "ui/app_list/views/app_list_view.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
+#include "ui/views/mus/window_manager_connection.h"
 
 namespace {
 
@@ -36,10 +36,15 @@ gfx::Point GetCenterOfDisplay(int64_t display_id, int minimum_height) {
 }  // namespace
 
 AppListPresenterDelegateMus::AppListPresenterDelegateMus(
+    app_list::AppListPresenter* presenter,
     app_list::AppListViewDelegateFactory* view_delegate_factory)
-    : view_delegate_factory_(view_delegate_factory) {}
+    : view_delegate_factory_(view_delegate_factory), presenter_(presenter) {}
 
-AppListPresenterDelegateMus::~AppListPresenterDelegateMus() {}
+AppListPresenterDelegateMus::~AppListPresenterDelegateMus() {
+  views::WindowManagerConnection::Get()
+      ->pointer_watcher_event_router()
+      ->RemovePointerWatcher(this);
+}
 
 app_list::AppListViewDelegate* AppListPresenterDelegateMus::GetViewDelegate() {
   return view_delegate_factory_->GetDelegate();
@@ -65,9 +70,11 @@ void AppListPresenterDelegateMus::Init(app_list::AppListView* view,
   view->SetAnchorPoint(
       GetCenterOfDisplay(display_id, GetMinimumBoundsHeightForAppList(view)));
 
+  views::WindowManagerConnection::Get()
+      ->pointer_watcher_event_router()
+      ->AddPointerWatcher(this, true);
+
   // TODO(mfomitchev): Setup updating bounds on keyboard bounds change.
-  // TODO(mfomitchev): Setup dismissing on mouse/touch gesture anywhere outside
-  // the bounds of the app list.
   // TODO(mfomitchev): Setup dismissing on maximize (touch-view) mode start/end.
   // TODO(mfomitchev): Setup DnD.
   // TODO(mfomitchev): UpdateAutoHideState for shelf
@@ -78,8 +85,6 @@ void AppListPresenterDelegateMus::OnShown(int64_t display_id) {
 }
 
 void AppListPresenterDelegateMus::OnDismissed() {
-  DCHECK(is_visible_);
-  is_visible_ = false;
 }
 
 void AppListPresenterDelegateMus::UpdateBounds() {
@@ -89,6 +94,22 @@ void AppListPresenterDelegateMus::UpdateBounds() {
   view_->UpdateBounds();
 }
 
+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.

[mfomitchev, 2016/09/29 20:00:36]

Nit: Capital D

[thanhph, 2016/09/29 20:42:51]

done!

+  if (event.type() == ui::ET_TOUCH_PRESSED ||
+      event.type() == ui::ET_POINTER_DOWN) {
+    if (!target) {
+      presenter_->Dismiss();
+    } else if (target != view_->GetWidget()) {

[mfomitchev, 2016/09/29 20:00:36]

Unify the two conditions to turn this into a simple if w/o else clause.

[thanhph, 2016/09/29 20:42:51]

done. thanks!

+      // else close the app list widget if clicks elsewhere

[mfomitchev, 2016/09/29 20:00:36]

Nit: Don't think you need this anymore.

[thanhph, 2016/09/29 20:42:51]

removed this comment!

+      presenter_->Dismiss();
+    }
+  }
+}
+
 gfx::Vector2d AppListPresenterDelegateMus::GetVisibilityAnimationOffset(
     aura::Window* root_window) {
   // TODO(mfomitchev): Classic ash does different animation here depending on