chromeos: Disable downloading container at browser start

Instead of downloading container at browser start, we now have a dbus
API to download container at any time.

BUG=chromium:768009
TEST=manual

Change-Id: I00f57024b27e4dc8ad2ba44f7ed7cbb5e374afbc
Reviewed-on: https://chromium-review.googlesource.com/688055
Commit-Queue: Xiaochu Liu <xiaochu@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504802}

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

@@ -863,12 +863,6 @@ void ChromeBrowserMainPartsChromeos::PreProfileInit() {
       FROM_HERE, {base::MayBlock()},
       base::BindOnce(component_updater::CrOSComponent::GetInstalledComponents),
       base::BindOnce(component_updater::CrOSComponent::RegisterComponents));
-
-  if (base::FeatureList::IsEnabled(features::kCrOSContainer)) {
-    // Force cros-termina component install (or update if installed).
-    component_updater::CrOSComponent::LoadComponent(
-        "cros-termina", base::Callback<void(const std::string&)>());
-  }
 }
 
 class GuestLanguageSetCallbackData {