Convert orientation values in input to ui::Rotation.

ui::Rotation both provides better typesafety as well as some convenience
functions (e.g. operator+, operator-).

Test: atest TouchVideoFrame_test.cpp InputReader_test.cpp
Change-Id: Ib423457c742ed3d41f2e3fc269ddf86809cbf247
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index 3685f54..162b757 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -552,19 +552,19 @@
                                 &pointerCoords[getPointerCount()]);
 }
 
-int MotionEvent::getSurfaceRotation() const {
+int32_t MotionEvent::getSurfaceRotation() const {
     // The surface rotation is the rotation from the window's coordinate space to that of the
     // display. Since the event's transform takes display space coordinates to window space, the
     // returned surface rotation is the inverse of the rotation for the surface.
     switch (mTransform.getOrientation()) {
         case ui::Transform::ROT_0:
-            return DISPLAY_ORIENTATION_0;
+            return static_cast<int32_t>(ui::ROTATION_0);
         case ui::Transform::ROT_90:
-            return DISPLAY_ORIENTATION_270;
+            return static_cast<int32_t>(ui::ROTATION_270);
         case ui::Transform::ROT_180:
-            return DISPLAY_ORIENTATION_180;
+            return static_cast<int32_t>(ui::ROTATION_180);
         case ui::Transform::ROT_270:
-            return DISPLAY_ORIENTATION_90;
+            return static_cast<int32_t>(ui::ROTATION_90);
         default:
             return -1;
     }