Revert "Fix mPositionInWindow to not use global coords"

This reverts commit 03e826d6b12b4f888bc5d5aac6745c60544db598.

Reason for revert: Breaks testPositionInWindow (b/191838493)

Change-Id: Ib49f65b4d3f7f5df7c95a3c229ab08aa8688f7a2
1 file changed