XFA: merge patch from CL 832703003, remove g_timeMap global

Get rid of g_timeMap global object.

g_timeMap is a global variable with a constructor and destructor so it
must be removed.

BUG=441899
TBR=tsepez@chromium.org

Review URL: https://codereview.chromium.org/832703003

Review URL: https://codereview.chromium.org/837483006
1 file changed