Add GPU bots to the default set of try jobs in ui/gl/ and gpu/.

gpu/PRESUBMIT.py

Index: gpu/PRESUBMIT.py
diff --git a/skia/PRESUBMIT.py b/gpu/PRESUBMIT.py
similarity index 74%
copy from skia/PRESUBMIT.py
copy to gpu/PRESUBMIT.py
index e22733cf670cc3978e85e5a17bf9233c43dd9cd6..fbacccd617ac4dcabc2828d49c833a6300a93250 100644
--- a/skia/PRESUBMIT.py
+++ b/gpu/PRESUBMIT.py
@@ -1,8 +1,8 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright (c) 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.
 
-"""Top-level presubmit script for skia/
+"""Top-level presubmit script for gpu/.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
@@ -11,8 +11,7 @@ for more details about the presubmit API built into depot_tools.
 def GetPreferredTrySlaves(project, change):
   return [
     'linux_gpu',
-    'win_gpu',
     'mac_gpu',
     'mac_gpu_retina',
-    'linux_layout_rel',
-    ]
+    'win_gpu',
+  ]