Add flags and experiment config for selecting triggering heuristics

components/dom_distiller/core/dom_distiller_switches.cc

Index: components/dom_distiller/core/dom_distiller_switches.cc
diff --git a/components/dom_distiller/core/dom_distiller_switches.cc b/components/dom_distiller/core/dom_distiller_switches.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ffb19d3c09288f53e4a5a57e57fea5d47298928d
--- /dev/null
+++ b/components/dom_distiller/core/dom_distiller_switches.cc
@@ -0,0 +1,12 @@
+// Copyright 2015 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 "components/dom_distiller/core/dom_distiller_switches.h"
+
+namespace switches {
+const char kEnableReaderModeOGArticleHeuristics[] =
+    "enable-reader-mode-og-article-heuristics";
+const char kEnableReaderModeAdaBoostHeuristics[] =
+    "enable-reader-mode-adaboost-heuristics";
+};