GitLab

Created CRWWebStatePolicyDecider delegate.
Created WebStatePolicyDeciderBridge.
Created CRWTestWebStatePolicyDecider (fake test class).
Added unit tests for the newely created delegate/bridge.

This will be required by PreloadController as it's an objective-c class
and i'm going to make it a WebStatePolicyDecider (as part of effort to
move any logic related to app launching out of the CRWWebController.

Bug: 674991, 850760
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I8e17d4d23fc4960609a19708148baa73381983c8
Reviewed-on: https://chromium-review.googlesource.com/1157135Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Mohammad Refaat <mrefaat@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580037}