Add MemoryCoordinator

components/memory_coordinator/browser/memory_coordinator_impl.h

Index: components/memory_coordinator/browser/memory_coordinator_impl.h
diff --git a/components/memory_coordinator/browser/memory_coordinator_impl.h b/components/memory_coordinator/browser/memory_coordinator_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..224dae70ddf8765fd2b20734b205f97987d45f09
--- /dev/null
+++ b/components/memory_coordinator/browser/memory_coordinator_impl.h
@@ -0,0 +1,39 @@
+// 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_BROWSER_MEMORY_COORDINATOR_IMPL_H_
+#define COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_COORDINATOR_IMPL_H_
+
+#include "components/memory_coordinator/public/interfaces/memory_coordinator.mojom.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "mojo/public/cpp/bindings/interface_ptr_set.h"
+#include "services/shell/public/cpp/interface_provider.h"
+
+namespace memory_coordinator {
+
+// The implementation of MemoryCoordinator. See memory_coordinator.mojom
+// for the role of this class.
+class MemoryCoordinatorImpl : public mojom::MemoryCoordinator {
+ public:
+  MemoryCoordinatorImpl();
+  ~MemoryCoordinatorImpl() override;
+
+  // Called when a renderer process is launched.
+  void RendererLaunched(shell::InterfaceProvider* remote_interfaces);
+
+  // Iterates all children synchronously.
+  template <typename FunctionType>
+  void IterateChildren(FunctionType function) {
+    children_.ForAllPtrs(function);
+  }
+
+ private:
+  mojo::InterfacePtrSet<mojom::ChildMemoryCoordinator> children_;
+
+  DISALLOW_COPY_AND_ASSIGN(MemoryCoordinatorImpl);
+};
+
+}  // memory_coordinator
+
+#endif  // COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_COORDINATOR_IMPL_H_