linux_aura: Port GtkKeybindingsHandler to Aura.

content/public/browser/keybinding_handler_factory_aurax11.h

+// Copyright (c) 2014 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_PUBLIC_BROWSER_KEYBINDING_HANDLER_FACTORY_AURAX11_H_
+#define CONTENT_PUBLIC_BROWSER_KEYBINDING_HANDLER_FACTORY_AURAX11_H_
+
+#include "content/common/content_export.h"
+
+namespace content {
+
+class KeybindingHandlerAuraX11;
+
+// On Linux Aura, we need a way for the LinuxUI object to translate key
+// commands to the native content area.
+class CONTENT_EXPORT KeybindingHandlerFactoryAuraX11 {
+ public:
+  // Sets the factory. This is done inside of the initialization of the LinuxUI
+  // object.
+  static void SetFactory(KeybindingHandlerFactoryAuraX11* factory);
+
+  // Public interface to build a key handler. Can return NULL if no factory is
+  // set.
+  static KeybindingHandlerAuraX11* Build();
+
+ protected:
+  virtual ~KeybindingHandlerFactoryAuraX11() {}
+
+ private:
+  // Creates an instance of the platform and desktop specific translator.
+  virtual KeybindingHandlerAuraX11* Create() = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_KEYBINDING_HANDLER_FACTORY_AURAX11_H_