Merge AppServiceProxy and AppServiceProxyImpl.

All non-virtual in AppServiceProxy has been merged to AppServiceProxyImpl.
AppServiceProxy has been removed.
AppServiceProxyImpl is renamed to AppServiceProxy.

BUG=986213

Change-Id: I383abfbb16a7bba0591f667b3d489ea81bde5f2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1710287
Commit-Queue: Nancy Wang <nancylingwang@chromium.org>
Commit-Queue: Nigel Tao <nigeltao@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680749}
27 files changed