Add delegate and factory function for ChildMemoryCoordinator

components/memory_coordinator/child/child_memory_coordinator_impl_android.h

Index: components/memory_coordinator/child/child_memory_coordinator_impl_android.h
diff --git a/components/memory_coordinator/child/child_memory_coordinator_impl_android.h b/components/memory_coordinator/child/child_memory_coordinator_impl_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..2cdc8f57528e27bf8b808ba2d453fbd8af1b70d8
--- /dev/null
+++ b/components/memory_coordinator/child/child_memory_coordinator_impl_android.h
@@ -0,0 +1,30 @@
+// 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.
+
+#ifndef COMPONENTS_MEMORY_COORDINATOR_CHILD_CHILD_MEMORY_COORDINATOR_IMPL_ANDROID_H_
+#define COMPONENTS_MEMORY_COORDINATOR_CHILD_CHILD_MEMORY_COORDINATOR_IMPL_ANDROID_H_
+
+#include "components/memory_coordinator/child/child_memory_coordinator_impl.h"
+
+namespace memory_coordinator {
+
+class MEMORY_COORDINATOR_EXPORT ChildMemoryCoordinatorImplAndroid
+    : public ChildMemoryCoordinatorImpl {
+ public:
+  ChildMemoryCoordinatorImplAndroid(mojom::MemoryCoordinatorHandlePtr parent,
+                                    ChildMemoryCoordinatorDelegate* delegate);
+  ~ChildMemoryCoordinatorImplAndroid() override;
+
+  // TODO(bashi): Add JNI bindings to listen to OnTrimMemory()
+
+  // Android's ComponentCallback2.onTrimMemory() implementation.
+  void OnTrimMemory(int level);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChildMemoryCoordinatorImplAndroid);
+};
+
+}  // namespace memory_coordinator
+
+#endif  // COMPONENTS_MEMORY_COORDINATOR_CHILD_CHILD_MEMORY_COORDINATOR_IMPL_ANDROID_H_