Roll Help App from 7-Fyv71mI... to NN70vifSG...

Release_Notes: http://go/help_app-x20/relnotes/Main/help_app_nightly_202009170800_RC00.html

https://chrome-infra-packages.appspot.com/p/chromeos_internal/apps/help_app/app/+/NN70vifSGSlhJi3jDlfT0co1BUiUANxx_Let7QT03BUC

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://skia-autoroll.corp.goog/r/help-app-chromium-autoroll
Please CC help-app@grotations.appspotmail.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Bug: None
Tbr: help-app@grotations.appspotmail.com
Change-Id: I2856f90f9b259945cf7a0e3f64899c3a3766dae3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416801
Reviewed-by: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Commit-Queue: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#807986}

DEPS

@@ -1551,7 +1551,7 @@ deps = {
     'packages': [
       {
         'package': 'chromeos_internal/apps/help_app/app',
-        'version': '7-Fyv71mIOgLZ5UT2rzvAWdbDHOekNFf1CVgl0mHSkkC',
+        'version': 'NN70vifSGSlhJi3jDlfT0co1BUiUANxx_Let7QT03BUC',
       },
     ],
     'condition': 'checkout_chromeos and checkout_src_internal',