Remove default startAllowlistLookup interface

Bug: 995926
Change-Id: I76ac44526fcf7241b800899810db81dbdd598ae3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1846092Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Xinghui Lu <xinghuilu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703911}

components/safe_browsing/android/java/src/org/chromium/components/safe_browsing/SafeBrowsingApiHandler.java

@@ -82,8 +82,5 @@ public interface SafeBrowsingApiHandler {
      *
      * @return true if the uri is found in the corresponding allowlist. Otherwise, false.
      */
-    // TODO(xinghuilu@): remove default once downstream implementation is patched
-    default boolean startAllowlistLookup(String uri, int threatType) {
-        return false;
-    }
+    public boolean startAllowlistLookup(String uri, int threatType);
 }