GitLab

Continue to simplify PendingAppManager by moving the logic to decide
if we should use InstallFromInfo into PendingAppInstallTask.

Also adds unit tests for installing apps from a WebApplicationInfo.

Bug: 1158722
Change-Id: I396f41b55d42d5183be60dab659fc6315c6147ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2607085Reviewed-by: Alan Cutter <alancutter@chromium.org>
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840908}