Tentative fix for scroll event related crashes on the NTP

chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java

Index: chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
index ff4bfcf5ffb91a7683b7c870afd11603db206a35..6118184fe7b4c5e39b2719f7fe58bdc9e45c4902 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
@@ -9,8 +9,8 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
-import static org.mockito.Mockito.any;
-import static org.mockito.Mockito.anyString;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.doNothing;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
@@ -18,10 +18,6 @@ import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
-import static org.chromium.base.test.util.Matchers.greaterThanOrEqualTo;
-import static org.chromium.chrome.browser.ntp.cards.ContentSuggestionsTestUtils
-        .createDummySuggestions;
-
 import android.support.annotation.Nullable;
 import android.view.ContextMenu;
 import android.view.Menu;
@@ -34,6 +30,10 @@ import org.junit.runner.RunWith;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 
+import static org.chromium.base.test.util.Matchers.greaterThanOrEqualTo;
+import static org.chromium.chrome.browser.ntp.cards.ContentSuggestionsTestUtils
+        .createDummySuggestions;
+
 import org.chromium.base.Callback;
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.metrics.RecordUserAction;
@@ -1047,5 +1047,10 @@ public class NewTabPageAdapterTest {
         public void registerSignInStateObserver(SignInStateObserver signInStateObserver) {
             mSignInStateObserver = signInStateObserver;
         }
+
+        @Override
+        public boolean isCurrentPage() {
+            return true;
+        }
     }
 }