components/metrics: Add runtime memory leak detector

components/metrics/leak_detector/leak_detector_value_type.cc

Index: components/metrics/leak_detector/leak_detector_value_type.cc
diff --git a/components/metrics/leak_detector/leak_detector_value_type.cc b/components/metrics/leak_detector/leak_detector_value_type.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4642f5150f840587ffecff539ba21a0444c17c11
--- /dev/null
+++ b/components/metrics/leak_detector/leak_detector_value_type.cc
@@ -0,0 +1,47 @@
+// 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/metrics/leak_detector/leak_detector_value_type.h"
+
+#include <stdio.h>
+
+namespace metrics {
+namespace leak_detector {
+
+bool LeakDetectorValueType::operator==(
+    const LeakDetectorValueType& other) const {
+  if (type_ != other.type_)
+    return false;
+
+  switch (type_) {
+    case TYPE_SIZE:
+      return size_ == other.size_;
+    case TYPE_CALL_STACK:
+      return call_stack_ == other.call_stack_;
+    case TYPE_NONE:
+      // "NONE" types are considered to be all identical.
+      return true;
+  }
+  return false;
+}
+
+bool LeakDetectorValueType::operator<(
+    const LeakDetectorValueType& other) const {
+  if (type_ != other.type_)
+    return type_ < other.type_;
+
+  switch (type_) {
+    case TYPE_SIZE:
+      return size_ < other.size_;
+    case TYPE_CALL_STACK:
+      return call_stack_ < other.call_stack_;
+    case TYPE_NONE:
+      // "NONE" types are considered to be all identical.
+      return false;
+  }
+  return false;
+}
+
+}  // namespace leak_detector
+}  // namespace metrics