metrics: Add leak detector controller in Chrome OS metrics system

components/metrics/leak_detector/leak_detector.gypi

Index: components/metrics/leak_detector/leak_detector.gypi
diff --git a/components/metrics/leak_detector/leak_detector.gypi b/components/metrics/leak_detector/leak_detector.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..eaf38cd575f2dcf28748d87ef60b65ee639d645a
--- /dev/null
+++ b/components/metrics/leak_detector/leak_detector.gypi
@@ -0,0 +1,14 @@
+# Copyright 2016 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.
+
+# This is the GYP equivalent of
+# //components/metrics/leak_detector/leak_detector.gni.
+# Please keep in sync.
+
+{
+  'variables': {
+    # See description in leak_detector.gni.
+    'enable_leak_detector%': 0,
+  }
+}