Add MemoryCoordinatorDelegate

chrome/browser/memory/chrome_memory_coordinator_delegate.h

+// 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 CHROME_BROWSER_MEMORY_CHROME_MEMORY_COORDINATOR_DELEGATE_H_
+#define CHROME_BROWSER_MEMORY_CHROME_MEMORY_COORDINATOR_DELEGATE_H_
+
+#include "base/memory/weak_ptr.h"
+#include "content/public/browser/memory_coordinator_delegate.h"
+
+namespace memory {
+
+// A MemoryCoordinatorDelegate which uses TabManager internally.
+class ChromeMemoryCoordinatorDelegate
+    : public content::MemoryCoordinatorDelegate {
+ public:
+  static std::unique_ptr<content::MemoryCoordinatorDelegate> Create();
+
+  ~ChromeMemoryCoordinatorDelegate() override;
+
+  // MemoryCoordinatorDelegate implementation.
+  bool CanSuspendBackgroundedRenderer(int render_process_id) override;
+
+ private:
+  ChromeMemoryCoordinatorDelegate();
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeMemoryCoordinatorDelegate);
+};
+
+}  // namespace memory
+
+#endif  // CHROME_BROWSER_MEMORY_CHROME_MEMORY_COORDINATOR_DELEGATE_H_