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/TouchVideoFrame.cpp b/libs/input/TouchVideoFrame.cpp
index c62e098..c9393f4 100644
--- a/libs/input/TouchVideoFrame.cpp
+++ b/libs/input/TouchVideoFrame.cpp
@@ -40,17 +40,20 @@
 
 const struct timeval& TouchVideoFrame::getTimestamp() const { return mTimestamp; }
 
-void TouchVideoFrame::rotate(int32_t orientation) {
+void TouchVideoFrame::rotate(ui::Rotation orientation) {
     switch (orientation) {
-        case DISPLAY_ORIENTATION_90:
+        case ui::ROTATION_90:
             rotateQuarterTurn(false /*clockwise*/);
             break;
-        case DISPLAY_ORIENTATION_180:
+        case ui::ROTATION_180:
             rotate180();
             break;
-        case DISPLAY_ORIENTATION_270:
+        case ui::ROTATION_270:
             rotateQuarterTurn(true /*clockwise*/);
             break;
+        case ui::ROTATION_0:
+            // No need to rotate if there's no rotation.
+            break;
     }
 }