Revert of CrOS: Fix appearance of notification toasts when sliding out via gesture

ui/message_center/views/custom_notification_view_unittest.cc

Index: ui/message_center/views/custom_notification_view_unittest.cc
diff --git a/ui/message_center/views/custom_notification_view_unittest.cc b/ui/message_center/views/custom_notification_view_unittest.cc
index 3f1a36709d517af2b17d11f432459c0cc2aeb404..4b9e13d5f785be20d029c54003fb384f93d90d39 100644
--- a/ui/message_center/views/custom_notification_view_unittest.cc
+++ b/ui/message_center/views/custom_notification_view_unittest.cc
@@ -29,6 +29,21 @@
 
 const SkColor kBackgroundColor = SK_ColorGREEN;
 
+std::unique_ptr<ui::GestureEvent> GenerateGestureEvent(ui::EventType type) {
+  ui::GestureEventDetails detail(type);
+  std::unique_ptr<ui::GestureEvent> event(
+      new ui::GestureEvent(0, 0, 0, base::TimeTicks(), detail));
+  return event;
+}
+
+std::unique_ptr<ui::GestureEvent> GenerateGestureHorizontalScrollUpdateEvent(
+    int dx) {
+  ui::GestureEventDetails detail(ui::ET_GESTURE_SCROLL_UPDATE, dx, 0);
+  std::unique_ptr<ui::GestureEvent> event(
+      new ui::GestureEvent(0, 0, 0, base::TimeTicks(), detail));
+  return event;
+}
+
 class TestCustomView : public views::View {
  public:
   TestCustomView() {
@@ -233,6 +248,10 @@
     notification_view()->UpdateWithNotification(*notification());
   }
 
+  float GetNotificationScrollAmount() const {
+    return notification_view_->GetTransform().To2dTranslation().x();
+  }
+
   TestMessageCenterController* controller() { return &controller_; }
   Notification* notification() { return notification_.get(); }
   TestCustomView* custom_view() {
@@ -276,6 +295,53 @@
   EXPECT_EQ(1, custom_view()->keyboard_event_count());
 }
 
+TEST_F(CustomNotificationViewTest, SlideOut) {
+  UpdateNotificationViews();
+  std::string notification_id = notification()->id();
+
+  auto event_begin = GenerateGestureEvent(ui::ET_GESTURE_SCROLL_BEGIN);
+  auto event_scroll10 = GenerateGestureHorizontalScrollUpdateEvent(-10);
+  auto event_scroll500 = GenerateGestureHorizontalScrollUpdateEvent(-500);
+  auto event_end = GenerateGestureEvent(ui::ET_GESTURE_SCROLL_END);
+
+  notification_view()->OnGestureEvent(event_begin.get());
+  notification_view()->OnGestureEvent(event_scroll10.get());
+  EXPECT_FALSE(controller()->IsRemoved(notification_id));
+  EXPECT_EQ(-10.f, GetNotificationScrollAmount());
+  notification_view()->OnGestureEvent(event_end.get());
+  EXPECT_FALSE(controller()->IsRemoved(notification_id));
+  EXPECT_EQ(0.f, GetNotificationScrollAmount());
+
+  notification_view()->OnGestureEvent(event_begin.get());
+  notification_view()->OnGestureEvent(event_scroll500.get());
+  EXPECT_FALSE(controller()->IsRemoved(notification_id));
+  EXPECT_EQ(-500.f, GetNotificationScrollAmount());
+  notification_view()->OnGestureEvent(event_end.get());
+  EXPECT_TRUE(controller()->IsRemoved(notification_id));
+}
+
+// Pinning notification is ChromeOS only feature.
+#if defined(OS_CHROMEOS)
+
+TEST_F(CustomNotificationViewTest, SlideOutPinned) {
+  notification()->set_pinned(true);
+  UpdateNotificationViews();
+  std::string notification_id = notification()->id();
+
+  auto event_begin = GenerateGestureEvent(ui::ET_GESTURE_SCROLL_BEGIN);
+  auto event_scroll500 = GenerateGestureHorizontalScrollUpdateEvent(-500);
+  auto event_end = GenerateGestureEvent(ui::ET_GESTURE_SCROLL_END);
+
+  notification_view()->OnGestureEvent(event_begin.get());
+  notification_view()->OnGestureEvent(event_scroll500.get());
+  EXPECT_FALSE(controller()->IsRemoved(notification_id));
+  EXPECT_LT(-500.f, GetNotificationScrollAmount());
+  notification_view()->OnGestureEvent(event_end.get());
+  EXPECT_FALSE(controller()->IsRemoved(notification_id));
+}
+
+#endif // defined(OS_CHROMEOS)
+
 TEST_F(CustomNotificationViewTest, PressBackspaceKey) {
   std::string notification_id = notification()->id();
   custom_view()->RequestFocus();