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: I142e0a8d121316e2c9ac8ca8f1de040e56bc8ddd
diff --git a/libs/input/MouseCursorController.cpp b/libs/input/MouseCursorController.cpp
index 0e7b7ff..a835167 100644
--- a/libs/input/MouseCursorController.cpp
+++ b/libs/input/MouseCursorController.cpp
@@ -199,8 +199,7 @@
     width = viewport.deviceWidth;
     height = viewport.deviceHeight;
 
-    if (viewport.orientation == DISPLAY_ORIENTATION_90 ||
-        viewport.orientation == DISPLAY_ORIENTATION_270) {
+    if (viewport.orientation == ui::ROTATION_90 || viewport.orientation == ui::ROTATION_270) {
         std::swap(width, height);
     }
 }
@@ -244,38 +243,42 @@
 
         // Undo the previous rotation.
         switch (oldViewport.orientation) {
-            case DISPLAY_ORIENTATION_90:
+            case ui::ROTATION_90:
                 temp = x;
                 x = oldViewport.deviceHeight - y;
                 y = temp;
                 break;
-            case DISPLAY_ORIENTATION_180:
+            case ui::ROTATION_180:
                 x = oldViewport.deviceWidth - x;
                 y = oldViewport.deviceHeight - y;
                 break;
-            case DISPLAY_ORIENTATION_270:
+            case ui::ROTATION_270:
                 temp = x;
                 x = y;
                 y = oldViewport.deviceWidth - temp;
                 break;
+            case ui::ROTATION_0:
+                break;
         }
 
         // Perform the new rotation.
         switch (viewport.orientation) {
-            case DISPLAY_ORIENTATION_90:
+            case ui::ROTATION_90:
                 temp = x;
                 x = y;
                 y = viewport.deviceHeight - temp;
                 break;
-            case DISPLAY_ORIENTATION_180:
+            case ui::ROTATION_180:
                 x = viewport.deviceWidth - x;
                 y = viewport.deviceHeight - y;
                 break;
-            case DISPLAY_ORIENTATION_270:
+            case ui::ROTATION_270:
                 temp = x;
                 x = viewport.deviceWidth - y;
                 y = temp;
                 break;
+            case ui::ROTATION_0:
+                break;
         }
 
         // Apply offsets to convert from the pixel center to the pixel top-left corner position