Add API to set render process preferences

atom/renderer/preferences_manager.h

@@ -0,0 +1,35 @@
+// Copyright (c) 2016 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_RENDERER_PREFERENCES_MANAGER_H_
+#define ATOM_RENDERER_PREFERENCES_MANAGER_H_
+
+#include <memory>
+
+#include "base/values.h"
+#include "content/public/renderer/render_process_observer.h"
+
+namespace atom {
+
+class PreferencesManager : public content::RenderProcessObserver {
+ public:
+  PreferencesManager();
+  ~PreferencesManager() override;
+
+  const base::ListValue* preferences() const { return preferences_.get(); }
+
+ private:
+  // content::RenderThreadObserver:
+  bool OnControlMessageReceived(const IPC::Message& message) override;
+
+  void OnUpdatePreferences(const base::ListValue& preferences);
+
+  std::unique_ptr<base::ListValue> preferences_;
+
+  DISALLOW_COPY_AND_ASSIGN(PreferencesManager);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_RENDERER_PREFERENCES_MANAGER_H_