Mark some OpenTabsTest tests as flaky.

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

Index: chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/OpenTabsTest.java
diff --git a/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/OpenTabsTest.java b/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/OpenTabsTest.java
index c8524cbbf2141a49c477686c4ec847b70b064e46..7bb262e55bd77ea041ffd205d5e756c808337c05 100644
--- a/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/OpenTabsTest.java
+++ b/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/OpenTabsTest.java
@@ -4,6 +4,7 @@
 
 package org.chromium.chrome.browser.sync;
 
+import android.test.FlakyTest;
 import android.test.suitebuilder.annotation.LargeTest;
 import android.util.Pair;
 
@@ -87,9 +88,13 @@ public void testUploadOpenTab() throws Exception {
         waitForServerTabs(URL);
     }
 
+    /*
     // Test syncing multiple open tabs from client to server.
     @LargeTest
     @Feature({"Sync"})
+    https://crbug.com/592437
+    */
+    @FlakyTest
     public void testUploadMultipleOpenTabs() throws Exception {
         loadUrl(URL);
         loadUrlInNewTab(URL2);
@@ -98,9 +103,13 @@ public void testUploadMultipleOpenTabs() throws Exception {
         waitForServerTabs(URL, URL2, URL3);
     }
 
+    /*
     // Test syncing an open tab from client to server.
     @LargeTest
     @Feature({"Sync"})
+    https://crbug.com/592437
+    */
+    @FlakyTest
     public void testUploadAndCloseOpenTab() throws Exception {
         loadUrl(URL);
         // Can't have zero tabs, so we have to open two to test closing one.