Update from https://crrev.com/327068

base/android/java_runtime.h

Index: base/android/java_runtime.h
diff --git a/base/android/java_runtime.h b/base/android/java_runtime.h
new file mode 100644
index 0000000000000000000000000000000000000000..bde4c5c6bd07811fb8be7adb79ff990daf2d7f45
--- /dev/null
+++ b/base/android/java_runtime.h
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+// 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.
+
+#ifndef BASE_ANDROID_JAVA_RUNTIME_H
+#define BASE_ANDROID_JAVA_RUNTIME_H
+
+#include "base/android/scoped_java_ref.h"
+#include "base/base_export.h"
+
+namespace base {
+namespace android {
+
+// Wrapper class for using the java.lang.Runtime object from jni.
+class BASE_EXPORT JavaRuntime {
+ public:
+  // Registers the jni class (once per process).
+  static bool Register(JNIEnv* env);
+
+  // Fills the total memory used and memory allocated for objects by the java
+  // heap in the current process. Returns true on success.
+  static void GetMemoryUsage(long* total_memory, long* free_memory);
+};
+
+}  // namespace android
+}  // namespace base
+
+#endif  // BASE_ANDROID_JAVA_RUNTIME_H