Update WebAPKs even if the WebAPK start URL has no Web Manifest

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

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateDataFetcher.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateDataFetcher.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateDataFetcher.java
index 9a0a84ef5984f87302cd290e6a96016c74527150..5b50aa0c6a1907276204b1fa56f4e5d2906349a7 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateDataFetcher.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateDataFetcher.java
@@ -22,15 +22,10 @@ public class WebApkUpdateDataFetcher extends EmptyTabObserver {
     /** Observes fetching of the Web Manifest. */
     public interface Observer {
         /**
-         * Called when the Web Manifest for the initial URL load has been fetched (successfully or
-         * unsuccessfully).
-         * TODO(pkotwicz): Add calls to {@link #onFinishedFetchingWebManifestForInitialUrl()}.
-         * @param fetchedInfo  The fetched Web Manifest data. Null if the initial URL does not point
-         *                     to a Web Manifest.
-         * @param bestIconUrl  The icon URL in {@link fetchedInfo#iconUrlToMurmur2HashMap()} best
-         *                     suited for use as the launcher icon on this device.
+         * Called when the initial URL load has completed and the page has no Web Manifest or the
+         * Web Manifest is not WebAPK compatible.
          */
-        void onFinishedFetchingWebManifestForInitialUrl(WebApkInfo fetchedInfo, String bestIconUrl);
+        void onWebManifestForInitialUrlNotWebApkCompatible();
 
         /**
          * Called when the Web Manifest has been successfully fetched (including on the initial URL
@@ -121,6 +116,15 @@ public class WebApkUpdateDataFetcher extends EmptyTabObserver {
         mObserver.onGotManifestData(info, bestIconUrl);
     }
 
+    /**
+     * Called when the initial URL load has completed and the page has no Web Manifest or the
+     * Web Manifest is not WebAPK compatible.
+     */
+    @CalledByNative
+    private void onWebManifestForInitialUrlNotWebApkCompatible() {
+        mObserver.onWebManifestForInitialUrlNotWebApkCompatible();
+    }
+
     private native long nativeInitialize(String scope, String webManifestUrl);
     private native void nativeReplaceWebContents(
             long nativeWebApkUpdateDataFetcher, WebContents webContents);