commit ddb1ab17fe48895fa8d1ef920dfe9150ae664715
author Xi Han <hanxi@google.com> Mon Aug 27 22:18:54 2018
committer Commit Bot <commit-bot@chromium.org> Mon Aug 27 22:18:54 2018
tree c2308cec78d03ebf9424959306b2d3ef35828df2
parent e034d1631b4e9a5348403b2ab910caaa9794b7e0

[FeatureList] Load local state file into a pref_store, and use the pref store to init local state later. [1/3]

The reason to create local state in two steps is because we need to read some value from the
local state file first, and at that time it's too early to create the full local state object.

We read local state file by creating a simple pref_service from the pref_store, and when
local state is ready, reset all the objects that uses the simple pref_service to use the
full local state.

This is the first step to move feature list creation earlier on
content_main_runner. We need the simple pref service to create feature list.

This CL comes from https://crrev.com/c/1081759. See previous discussion there.

More info is available on design doc
https://docs.google.com/document/d/1czDvrWU5bE9okOiX-uMwJuZ09SzqxTEW3zHAJG11RVI/edit

Bug: 848615, 729596
Change-Id: I3e58768ab68e75d51b9a64155923565823e154e3
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Reviewed-on: https://chromium-review.googlesource.com/1148959
Reviewed-by: Gabriel Charette <gab@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Xi Han <hanxi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586445}