NOCOMMIT prototype: GRC service plumbing and process priority

content/browser/resource_coordinator_web_contents_observer.h

+// Copyright 2017 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 CONTENT_BROWSER_RESOURCE_COORDINATOR_WEB_CONTENTS_OBSERVER_H_
+#define CONTENT_BROWSER_RESOURCE_COORDINATOR_WEB_CONTENTS_OBSERVER_H_
+
+#include <stdint.h>
+
+#include "base/macros.h"
+#include "content/common/content_export.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+#include "services/resource_coordinator/public/cpp/resource_coordinator_interface.h"
+
+namespace content {
+
+class CONTENT_EXPORT ResourceCoordinatorWebContentsObserver
+    : public content::WebContentsObserver,
+      public content::WebContentsUserData<
+          ResourceCoordinatorWebContentsObserver> {
+ public:
+  ~ResourceCoordinatorWebContentsObserver() override;
+
+  // WebContentsObserver implementation.
+  void ReadyToCommitNavigation(NavigationHandle* navigation_handle) override;
+  void DidFinishNavigation(NavigationHandle* navigation_handle) override;
+  void WasShown() override;
+  void WasHidden() override;
+
+  resource_coordinator::ResourceCoordinatorInterface*
+  resource_coordinator_interface() {
+    return resource_coordinator_.get();
+  }
+
+ private:
+  explicit ResourceCoordinatorWebContentsObserver(
+      content::WebContents* web_contents);
+  friend class content::WebContentsUserData<
+      ResourceCoordinatorWebContentsObserver>;
+
+  std::unique_ptr<resource_coordinator::ResourceCoordinatorInterface>
+      resource_coordinator_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResourceCoordinatorWebContentsObserver);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RESOURCE_COORDINATOR_WEB_CONTENTS_OBSERVER_H_