Re-enable NewTabPageTest#testRender_FocusFakeBox

Re-enable render test with updated goldens on API 23. Remove goldens for
KitKat based on clank-frontend recommendation (see bug for more detail).

Bug: 888129
Change-Id: Icb86ec7adc8975ec1d417aa2f0449d9b3256f861
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2148160Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758931}

chrome/android/javatests/src/org/chromium/chrome/browser/ntp/NewTabPageTest.java

@@ -214,8 +214,7 @@ public class NewTabPageTest {
     }
 
     @Test
-    @DisabledTest(message = "https://crbug.com/888129")
-    @SmallTest
+    @MediumTest
     @Feature({"NewTabPage", "FeedNewTabPage", "RenderTest"})
     @ParameterAnnotations.UseMethodParameter(InterestFeedParams.class)
     public void testRender_FocusFakeBox(boolean interestFeedEnabled) throws Exception {

chrome/test/data/android/render_tests/NewTabPageTest.focus_fake_box.Nexus_5-19.png.sha1

-cc9c9ce7b8b6cc5c7e7d6c710e1f6686c7ecfc22
\ No newline at end of file

chrome/test/data/android/render_tests/NewTabPageTest.focus_fake_box.Nexus_5X-23.png.sha1

+978cf88f5f04f0182dec99909ac1ee924b6459f3
\ No newline at end of file