Make DETECT_IMPORTANT_CONTENT the default Plugins content setting based

components/plugins/common/plugins_switches.cc

+// 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/plugins/common/plugins_switches.h"
+
+namespace plugins {
+namespace switches {
+
+// Disables the experimental Plugin Power Saver feature.
+const char kDisablePluginPowerSaver[] = "disable-plugin-power-saver";
+
+// Enables the experimental Plugin Power Saver feature.
+const char kEnablePluginPowerSaver[] = "enable-plugin-power-saver";
+
+}  // namespace switches
+}  // namespace plugins