Remove untrusted sources installation flow.

chrome/browser/android/shortcut_helper.cc

Index: chrome/browser/android/shortcut_helper.cc
diff --git a/chrome/browser/android/shortcut_helper.cc b/chrome/browser/android/shortcut_helper.cc
index 9a0674f440f3f56984eeeaf7f5f7eb87eb239df3..13809358f50740a2497bfa017291a2c0ad541bac 100644
--- a/chrome/browser/android/shortcut_helper.cc
+++ b/chrome/browser/android/shortcut_helper.cc
@@ -161,8 +161,6 @@ void ShortcutHelper::InstallWebApkWithSkBitmap(
     const WebApkInstallService::FinishCallback& callback) {
   WebApkInstallService::Get(web_contents->GetBrowserContext())
       ->InstallAsync(info, icon_bitmap, callback);
-  // Don't record metric for users who install WebAPKs via "unsigned sources"
-  // flow.
   if (ChromeWebApkHost::GetGooglePlayInstallState() ==

[Yaron, 2017/04/04 16:42:02]

the comment was unnecessary, but I'm truthfully unsure about the conditional. We
can probably assume it's SUPPORTED if we get here?

[pkotwicz, 2017/04/04 19:06:07]

We can. The caller only calls ShortcutHelper::InstallWebApkWithSkBitmap() if
ChromeWebApkHost::CanInstallWebApk()

See AppBannerInfoBarDelegateAndroid::Create()

[Yaron, 2017/04/04 19:49:08]

Done.

       GooglePlayInstallState::SUPPORTED) {
     webapk::TrackGooglePlayInstallState(GooglePlayInstallState::SUPPORTED);