[Android WebAPK] Do not hide splash screen when network error dialog is up

This CL changes the splash screen hiding logic to not hide the splash screen
while the network error dialog is up.

BUG=920729

Change-Id: Ifa4659b2e97c70b5d4dde83ba52b3bd41a80ea29
Reviewed-on: https://chromium-review.googlesource.com/c/1405985
Commit-Queue: Peter Kotwicz <pkotwicz@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622103}
2 files changed