Mark all chrome sync tests with @RetryOnFailure

chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java

Index: chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java
diff --git a/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java b/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java
index b94ed20aef58fb9e53eaef79235d287426f2434f..f35f828ef68fc88c48d4a32f2c1881a5c288f22d 100644
--- a/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java
+++ b/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java
@@ -10,6 +10,7 @@ import android.widget.ListView;
 
 import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.FlakyTest;
+import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.sync.SyncTestBase;
 import org.chromium.components.sync.PassphraseType;
@@ -17,6 +18,7 @@ import org.chromium.components.sync.PassphraseType;
 /**
  * Tests to make sure that PassphraseTypeDialogFragment presents the correct options.
  */
+@RetryOnFailure  // crbug.com/637448
 public class PassphraseTypeDialogFragmentTest extends SyncTestBase {
     private static final String TAG = "PassphraseTypeDialogFragmentTest";