onFinishGetBitmap() test should assert ReadbackResponse also

content/public/android/javatests/src/org/chromium/content/browser/ContentViewReadbackTest.java

Index: content/public/android/javatests/src/org/chromium/content/browser/ContentViewReadbackTest.java
diff --git a/content/public/android/javatests/src/org/chromium/content/browser/ContentViewReadbackTest.java b/content/public/android/javatests/src/org/chromium/content/browser/ContentViewReadbackTest.java
index 5a670c45b54738de987ef312231d83a14cb09074..b3452e471ec199e56008e48312b64676892ec7f7 100644
--- a/content/public/android/javatests/src/org/chromium/content/browser/ContentViewReadbackTest.java
+++ b/content/public/android/javatests/src/org/chromium/content/browser/ContentViewReadbackTest.java
@@ -20,6 +20,7 @@ import org.chromium.base.test.util.UrlUtils;
 import org.chromium.content.browser.ContentReadbackHandler.GetBitmapCallback;
 import org.chromium.content.browser.test.util.Criteria;
 import org.chromium.content.browser.test.util.CriteriaHelper;
+import org.chromium.content_public.browser.readback_types.ReadbackResponse;
 import org.chromium.content_shell_apk.ContentShellTestBase;
 
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -106,6 +107,7 @@ public class ContentViewReadbackTest extends ContentShellTestBase {
                 GetBitmapCallback callback = new GetBitmapCallback() {
                     @Override
                     public void onFinishGetBitmap(Bitmap bitmap, int response) {
+                        assertEquals(ReadbackResponse.SUCCESS, response);
                         assertNotNull("Readback did not return valid bitmap", bitmap);
                         // Verify a pixel in the center of the screenshot.
                         color.set(bitmap.getPixel(bitmap.getWidth() / 2, bitmap.getHeight() / 2));