Add a new WebAPK-specific app banner shortcut source.

chrome/browser/android/banners/app_banner_infobar_delegate_android.h

Index: chrome/browser/android/banners/app_banner_infobar_delegate_android.h
diff --git a/chrome/browser/android/banners/app_banner_infobar_delegate_android.h b/chrome/browser/android/banners/app_banner_infobar_delegate_android.h
index 6467eac3154372914cd5557604d9921dbd7be42a..c3c756151dac7792719ec99bac442f035afdf298 100644
--- a/chrome/browser/android/banners/app_banner_infobar_delegate_android.h
+++ b/chrome/browser/android/banners/app_banner_infobar_delegate_android.h
@@ -44,6 +44,7 @@ class AppBannerInfoBarDelegateAndroid : public ConfirmInfoBarDelegate {
                      const SkBitmap& primary_icon,
                      const SkBitmap& badge_icon,
                      int event_request_id,
+                     bool is_webapk,
                      webapk::InstallSource webapk_install_source);
 
   // Creates an infobar and delegate for promoting the installation of an