Fast app reinstall: Explicitly use https for the API URL.

Bug: 835029
Change-Id: I6b483f66203120d3684c0da6ba29bf9997116cee
Reviewed-on: https://chromium-review.googlesource.com/1164251
Commit-Queue: Yue Cen <rsgingerrs@chromium.org>
Reviewed-by: Wenzhao (Colin) Zang <wzang@chromium.org>
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586050}

chrome/browser/chromeos/login/screens/recommend_apps/recommend_apps_fetcher.cc

@@ -38,7 +38,7 @@ namespace chromeos {
 namespace {
 
 constexpr const char kGetAppListUrl[] =
-    "http://android.clients.google.com/fdfe/chrome/getfastreinstallappslist";
+    "https://android.clients.google.com/fdfe/chrome/getfastreinstallappslist";
 
 constexpr base::TimeDelta kDownloadTimeOut = base::TimeDelta::FromMinutes(1);