Add new method signature to AppIndexingReporter.

chrome/android/java/src/org/chromium/chrome/browser/historyreport/AppIndexingReporter.java

Index: chrome/android/java/src/org/chromium/chrome/browser/historyreport/AppIndexingReporter.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/historyreport/AppIndexingReporter.java b/chrome/android/java/src/org/chromium/chrome/browser/historyreport/AppIndexingReporter.java
index 2ebb35badafdd2e2fb5771ff3f5ea86b60772393..4312d822a81d758111147e908363b95afdb16c24 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/historyreport/AppIndexingReporter.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/historyreport/AppIndexingReporter.java
@@ -4,6 +4,7 @@
 
 package org.chromium.chrome.browser.historyreport;
 
+import org.chromium.blink.mojom.WebPage;
 import org.chromium.chrome.browser.AppHooks;
 
 /** Base class for reporting entities to App Indexing. */
@@ -22,12 +23,23 @@ public class AppIndexingReporter {
      * Reports provided entity to on-device index.
      * Base class does not implement any reporting, and call is a no-op. Child classes should
      * implement this functionality.
+     *
+     * Deprecated, to be removed in follow-up cl, after downstream change.
      */
     public void reportEntityJsonLd(String url, String json) {
         // Overriden by private class. Base class does nothing.
     }
 
     /**
+     * Reports provided entity to on-device index.
+     * Base class does not implement any reporting, and call is a no-op. Child classes should
+     * implement this functionality.
+     */
+    public void reportWebPage(WebPage webpage) {
+        // Overriden by private class. Base class does nothing.
+    }
+
+    /**
      * Clears history of reported entities.
      * Currently, we do not support clearing only a subset of history. Base class does not implement
      * any reporting, and call is a no-op. Child classes should implement this functionality.