components/metrics: Add runtime memory leak detector

components/metrics/leak_detector/leak_detector.h

Index: components/metrics/leak_detector/leak_detector.h
diff --git a/components/metrics/leak_detector/leak_detector.h b/components/metrics/leak_detector/leak_detector.h
new file mode 100644
index 0000000000000000000000000000000000000000..df5eeb7789b2122506dbb6d0578e54fb40d582ad
--- /dev/null
+++ b/components/metrics/leak_detector/leak_detector.h
@@ -0,0 +1,22 @@
+// Copyright (c) 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.
+
+#ifndef COMPONENTS_METRICS_LEAK_DETECTOR_LEAK_DETECTOR_H_
+#define COMPONENTS_METRICS_LEAK_DETECTOR_LEAK_DETECTOR_H_
+
+#include <stdint.h>

[wtc, 2015/08/21 20:02:12]

Nit: don't need to include <stdint.h>

[Simon Que, 2015/08/22 22:41:51]

Done.

+
+namespace leak_detector {
+
+class LeakDetector {
+ public:
+  // Singleton management functions.
+  static void Initialize();
+  static void Shutdown();
+  static bool IsInitialized();
+};
+
+}  // namespace leak_detector
+
+#endif  // COMPONENTS_METRICS_LEAK_DETECTOR_LEAK_DETECTOR_H_