Sync ui/events to chromium @ https://codereview.chromium.org/1210203002

ui/events/PRESUBMIT.py

+# Copyright 2014 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.
+
+"""Chromium presubmit script for src/ui/events
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details on the presubmit API built into depot_tools.
+"""
+
+def GetPreferredTryMasters(project, change):
+  return {
+    'tryserver.chromium.linux': {
+      'linux_chromium_chromeos_rel_ng': set(['defaulttests']),
+      'linux_chromium_chromeos_asan_rel_ng': set(['defaulttests']),
+    },
+    'tryserver.chromium.win': {
+      'win_chromium_compile_dbg': set(['defaulttests']),
+    }
+  }