The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/69ae3f7272abd5f3c8b5da163916396a3c2f83e4

commit 69ae3f7272abd5f3c8b5da163916396a3c2f83e4
Author: gangwu <gangwu@chromium.org>
Date: Tue Apr 04 23:46:46 2017

[sync] skeleton implementation of TypedURLSyncBridge

TypedURLSyncBridge is the USS(unified sync and storage) equivalent of
the TypedUrlSyncableService.

This CL is for adding TypedURLSyncBridge class but not implement any
function yet.
This CL is Also addressing missing parts for  bug 558320 . CL is
https://codereview.chromium.org/1647833006

BUG= 697960 

Review-Url: https://codereview.chromium.org/2723953002
Cr-Commit-Position: refs/heads/master@{#461901}

[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/chrome/browser/sync/chrome_sync_client.cc
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/browser_sync/profile_sync_components_factory_impl.cc
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/BUILD.gn
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/history_backend.cc
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/history_backend.h
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/history_service.cc
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/history_service.h
[add] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/typed_url_sync_bridge.cc
[add] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/history/core/browser/typed_url_sync_bridge.h
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/sync/driver/sync_driver_switches.cc
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/components/sync/driver/sync_driver_switches.h
[modify] https://crrev.com/69ae3f7272abd5f3c8b5da163916396a3c2f83e4/ios/chrome/browser/sync/ios_chrome_sync_client.mm