[Cronet] Pass metrics information from C++ BidirectionalStream to Java

components/cronet/android/metrics_util.cc

Index: components/cronet/android/metrics_util.cc
diff --git a/components/cronet/android/metrics_util.cc b/components/cronet/android/metrics_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..de18baaeab2222f5edec924d8debf03bbe9e05c4
--- /dev/null
+++ b/components/cronet/android/metrics_util.cc
@@ -0,0 +1,25 @@
+// 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.
+
+#include "components/cronet/android/metrics_util.h"
+
+#include "base/logging.h"
+
+namespace cronet {
+
+namespace metrics_util {
+
+int64_t ConvertTime(const base::TimeTicks& ticks,
+                    const base::TimeTicks& start_ticks,
+                    const base::Time& start_time) {
+  if (ticks.is_null() || start_ticks.is_null()) {
+    return -1;
+  }
+  DCHECK(!start_time.is_null());
+  return (start_time + (ticks - start_ticks)).ToJavaTime();
+}
+
+}  // namespace metrics_util
+
+}  // namespace cronet