Disable flaky tests in ContextualSearchManagerTest.java suite

chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java
index 68a8668cc9a7b9c9004bfae6bff1aa2d55d118b9..79fb25a2031f5a46cce7330278271c270b49bd97 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java
@@ -2739,6 +2739,7 @@ public class ContextualSearchManagerTest extends ChromeActivityTestCaseBase<Chro
      */
     @SmallTest
     @Feature({"ContextualSearch"})
+    @RetryOnFailure  // crbug.com/673681
     public void testQuickActionCaptionAndImage() throws InterruptedException, TimeoutException {
         // Simulate a tap to show the Bar, then set the quick action data.
         simulateTapSearch("search");