Allow ODHS update checks over HTTP.

Integrity of the check is still guaranteed by CUP.
The check will no longer be confidential.

Bug: 1057341
Change-Id: I366453b1586f3116ec75a11ef3718cfbbf5522ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2090336
Auto-Submit: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Sorin Jianu <sorin@chromium.org>
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747712}

components/component_updater/installer_policies/on_device_head_suggest_component_installer.cc

@@ -77,7 +77,7 @@ bool OnDeviceHeadSuggestInstallerPolicy::
 }
 
 bool OnDeviceHeadSuggestInstallerPolicy::RequiresNetworkEncryption() const {
-  return true;
+  return false;
 }
 
 update_client::CrxInstaller::Result