cmd/compile: make expanded/hidden columns in GOSSAFUNC persist across
reloads
use pushState with updated state and read it on page load,so that state
can survive across reloads.
Change-Id: I6c5e80e9747576245b979a62cb96d231d8f27d57
Reviewed-on: https://go-review.googlesource.com/c/go/+/248687
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bradford Lamson-Scribner <brad.lamson@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>