GestureConverter: send HOVER_ENTER and _EXIT events

Previously these were being put in by InputDispatcher automatically, but
ideally it wouldn't have to — an input mapper should produce a
consistent event stream in the first place.

Bug: 317183325
Test: atest inputflinger_tests
Test: with log.tag.InputDispatcherInboundEvent sysprop set to DEBUG,
      manually check events logged to InputDispatcher logcat tag
Change-Id: Ia74c4865da62520c8f8b7484def8b39c3eee820e
diff --git a/services/inputflinger/tests/TouchpadInputMapper_test.cpp b/services/inputflinger/tests/TouchpadInputMapper_test.cpp
index 91958e8..4be1e8c 100644
--- a/services/inputflinger/tests/TouchpadInputMapper_test.cpp
+++ b/services/inputflinger/tests/TouchpadInputMapper_test.cpp
@@ -37,6 +37,8 @@
 constexpr auto BUTTON_PRESS = AMOTION_EVENT_ACTION_BUTTON_PRESS;
 constexpr auto BUTTON_RELEASE = AMOTION_EVENT_ACTION_BUTTON_RELEASE;
 constexpr auto HOVER_MOVE = AMOTION_EVENT_ACTION_HOVER_MOVE;
+constexpr auto HOVER_ENTER = AMOTION_EVENT_ACTION_HOVER_ENTER;
+constexpr auto HOVER_EXIT = AMOTION_EVENT_ACTION_HOVER_EXIT;
 constexpr int32_t DISPLAY_ID = 0;
 constexpr int32_t DISPLAY_WIDTH = 480;
 constexpr int32_t DISPLAY_HEIGHT = 800;
@@ -151,12 +153,14 @@
     setScanCodeState(KeyState::UP, {BTN_LEFT});
     args += process(EV_SYN, SYN_REPORT, 0);
     ASSERT_THAT(args,
-                ElementsAre(VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_MOVE)),
+                ElementsAre(VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_ENTER)),
+                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_MOVE)),
+                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_EXIT)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(ACTION_DOWN)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(BUTTON_PRESS)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(BUTTON_RELEASE)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(ACTION_UP)),
-                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_MOVE))));
+                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_ENTER))));
 
     // Liftoff
     args.clear();
@@ -218,12 +222,14 @@
     setScanCodeState(KeyState::UP, {BTN_LEFT});
     args += process(EV_SYN, SYN_REPORT, 0);
     ASSERT_THAT(args,
-                ElementsAre(VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_MOVE)),
+                ElementsAre(VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_ENTER)),
+                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_MOVE)),
+                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_EXIT)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(ACTION_DOWN)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(BUTTON_PRESS)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(BUTTON_RELEASE)),
                             VariantWith<NotifyMotionArgs>(WithMotionAction(ACTION_UP)),
-                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_MOVE))));
+                            VariantWith<NotifyMotionArgs>(WithMotionAction(HOVER_ENTER))));
 
     // Liftoff
     args.clear();