Upstream: Do not show the add-to-homescreen/install-native-app infobar for WebAPKs

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
index 74d23ae4e3b06f981e184cc3152e90b8138eec6d..3bdd159a09a45342ff5780c65cb21e66e04dc1fd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
@@ -8,6 +8,9 @@ import android.content.Intent;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.chrome.browser.ShortcutHelper;
+import org.chromium.chrome.browser.banners.AppBannerManager;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.tab.TabDelegateFactory;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.ui.base.PageTransition;
 import org.chromium.webapk.lib.client.WebApkServiceConnectionManager;
@@ -43,6 +46,18 @@ public class WebApkActivity extends WebappActivity {
     }
 
     @Override
+    protected TabDelegateFactory createTabDelegateFactory() {
+        return new WebappDelegateFactory(this) {
+            @Override
+            public AppBannerManager createAppBannerManager(Tab tab) {
+                // Do not show app banners for WebAPKs regardless of the current page URL.
+                // A WebAPK can display a page outside of its WebAPK scope if a page within the
+                // WebAPK scope navigates via JavaScript while the WebAPK is in the background.
+                return null;
+            }
+        };
+    }
+
     public void onStop() {
         super.onStop();
         String packageName = getWebappInfo().webApkPackageName();