Disable flaky SingleClientPrintersSyncTest.EditPrinter on ChromeOS.

chrome/browser/sync/test/integration/single_client_printers_sync_test.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "chrome/browser/sync/test/integration/printers_helper.h"
 #include "chrome/browser/sync/test/integration/sync_test.h"
 #include "chrome/browser/sync/test/integration/updated_progress_marker_checker.h"
@@ skipping 35 matching lines @@
   AddPrinter(GetVerifierPrinterStore(), printers_helper::CreateTestPrinter(0));
   ASSERT_EQ(1, GetPrinterCount(0));
   ASSERT_EQ(1, GetVerifierPrinterCount());
 
   ASSERT_TRUE(UpdatedProgressMarkerChecker(GetSyncService(0)).Wait());
   EXPECT_EQ(1, GetVerifierPrinterCount());
   EXPECT_TRUE(ProfileContainsSamePrintersAsVerifier(0));
 }
 
 // Verify editing a printer doesn't add it.
-IN_PROC_BROWSER_TEST_F(SingleClientPrintersSyncTest, EditPrinter) {
+// Flaky on ChromeOS. http://crbug.com/701999
+#if defined(OS_CHROMEOS)
+#define MAYBE_EditPrinter DISABLED_EditPrinter
+#else
+#define MAYBE_EditPrinter EditPrinter
+#endif
+IN_PROC_BROWSER_TEST_F(SingleClientPrintersSyncTest, MAYBE_EditPrinter) {
   ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
 
   AddPrinter(GetPrinterStore(0), printers_helper::CreateTestPrinter(0));
   AddPrinter(GetVerifierPrinterStore(), printers_helper::CreateTestPrinter(0));
 
   ASSERT_TRUE(
       EditPrinterDescription(GetPrinterStore(0), 0, "Updated description"));
 
   EXPECT_EQ(1, GetPrinterCount(0));
   EXPECT_EQ(1, GetVerifierPrinterCount());
@@ skipping 19 matching lines @@
 #define MAYBE_AddBeforeSetup AddBeforeSetup
 #endif
 IN_PROC_BROWSER_TEST_F(SingleClientPrintersSyncTest, MAYBE_AddBeforeSetup) {
   ASSERT_TRUE(SetupClients());
 
   AddPrinter(GetPrinterStore(0), printers_helper::CreateTestPrinter(0));
   EXPECT_EQ(1, GetPrinterCount(0));
 
   EXPECT_TRUE(SetupSync()) << "SetupSync() failed.";
 }