Add comment to PPB_MouseInputEvent version 1.1 that GetMovement hasn't been supported.

ppapi/native_client/tests/ppapi_simple_tests/event.stdin

Index: ppapi/native_client/tests/ppapi_simple_tests/event.stdin
diff --git a/ppapi/native_client/tests/ppapi_simple_tests/event.stdin b/ppapi/native_client/tests/ppapi_simple_tests/event.stdin
index d3a5a162a876d51068fa9b6af3b0d5b1f2184ce8..c35856530cbd1ee72f03054fc8da2a520fd81887 100644
--- a/ppapi/native_client/tests/ppapi_simple_tests/event.stdin
+++ b/ppapi/native_client/tests/ppapi_simple_tests/event.stdin
@@ -86,7 +86,7 @@ replay 1 PPB_GetInterface:s:i  s("PPB_InputEvent;1.0") * i(1)
 rpc PPP_Instance_DidCreate ${INSTANCE} i(1) ${TAGS} ${VALUES} * i(0)
 
 replay 1 PPB_GetInterface:s:i  s("PPB_Var;1.0") * i(1)
-replay 1 PPB_GetInterface:s:i  s("PPB_MouseInputEvent;1.1") * i(1)
+replay 1 PPB_GetInterface:s:i  s("PPB_MouseInputEvent;1.0") * i(1)
 replay 1 PPB_GetInterface:s:i  s("PPB_KeyboardInputEvent;1.0") * i(1)
 # These occur once each for each event sent to the nexe
 replay 7 PPB_Core_AddRefResource:i: ${EVENT} *