[CrOS PhoneHub] Ensure conversation notifications are shown as popups

Previously, we'd look at the notification's "priority" field to
determine whether or not we'd show a popup or just add the notification
to the notification shade. This caused confusion to some users, since
some messaging apps would add this as a "minimum" or "no" priority
notification, which would cause us to silently add the notification
instead of adding it as a popup.

This CL updates the logic so that we always show notifications as a
popup.

Fixed: 1165646
Change-Id: Ic76bcb4eb448547ecc61c2d79828c07a3e3352b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626030
Auto-Submit: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Regan Hsu <hsuregan@chromium.org>
Reviewed-by: Regan Hsu <hsuregan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842781}

ash/system/phonehub/phone_hub_notification_controller.cc

@@ -462,19 +462,6 @@ PhoneHubNotificationController::CreateNotification(
 int PhoneHubNotificationController::GetSystemPriorityForNotification(
     const chromeos::phonehub::Notification* notification,
     bool is_update) {
-  switch (notification->importance()) {
-    case chromeos::phonehub::Notification::Importance::kNone:
-      FALLTHROUGH;
-    case chromeos::phonehub::Notification::Importance::kMin:
-      return message_center::MIN_PRIORITY;
-
-    case chromeos::phonehub::Notification::Importance::kUnspecified:
-      FALLTHROUGH;
-    case chromeos::phonehub::Notification::Importance::kLow:
-      FALLTHROUGH;
-    case chromeos::phonehub::Notification::Importance::kDefault:
-      FALLTHROUGH;
-    case chromeos::phonehub::Notification::Importance::kHigh:
   bool has_notification_been_shown =
       base::Contains(shown_notification_ids_, notification->id());
 
@@ -489,7 +476,6 @@ int PhoneHubNotificationController::GetSystemPriorityForNotification(
   // so that users can see new messages come in as they are chatting. See
   // https://crbug.com/1159063.
   return message_center::MAX_PRIORITY;
-  }
 }
 
 // static

ash/system/phonehub/phone_hub_notification_controller_unittest.cc

@@ -361,4 +361,23 @@ TEST_F(PhoneHubNotificationControllerTest, DoNotReshowPopupNotification) {
   EXPECT_TRUE(cros_notification->renotify());
 }
 
+// Regression test for https://crbug.com/1165646.
+TEST_F(PhoneHubNotificationControllerTest, MinPriorityNotification) {
+  chromeos::phonehub::Notification fake_notification(
+      kPhoneHubNotificationId0,
+      chromeos::phonehub::Notification::AppMetadata(base::UTF8ToUTF16(kAppName),
+                                                    kPackageName,
+                                                    /*icon=*/gfx::Image()),
+      base::Time::Now(), chromeos::phonehub::Notification::Importance::kMin,
+      /*inline_reply_id=*/0, base::UTF8ToUTF16(kTitle),
+      base::UTF8ToUTF16(kTextContent));
+
+  // Adding the notification for the first time shows a pop-up (MAX_PRIORITY),
+  // even though the notification itself is Importance::kMin.
+  notification_manager_->SetNotification(fake_notification);
+  auto* cros_notification = FindNotification(kCrOSNotificationId0);
+  ASSERT_TRUE(cros_notification);
+  EXPECT_EQ(message_center::MAX_PRIORITY, cros_notification->priority());
+}
+
 }  // namespace ash