GitLab

This change pulls weblayer out of the base module and into the chrome
module. WebLayer supports being loaded from a "weblayer" split, so an
empty split is created which depends on the "chrome" split (which has
the weblayer implementation). WebLayer java was not added directly to
the "weblayer" split, because it would end up pulling a bunch of code
shared with chrome into the base module.

Bug: 1126301
Change-Id: I78aaec57a9b970bec964c36421d759bbbf7039eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2463963Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Clark DuVall <cduvall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#817305}