Clarify coordinate spaces in UinputTouchDevice The UinputTouchDevice class has methods that take coordinates in the touch device's raw coordinate space, and methods that take coordinates in the screen (logical display) coordinate space. This CL clarifies the difference between the two coordinate spaces in the method documentation. Bug: 360229249 Change-Id: I7962e4d0eaca224292fcf15bdf63010cc3753860 Test: None Flag: DOCS_ONLY