Keyboard Lock Host implementation

content/browser/keyboard_lock/keyboard_lock_service_impl.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.
 
 #include <string>
 #include <vector>
 
 #include "content/common/content_export.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "third_party/WebKit/public/platform/modules/keyboard_lock/keyboard_lock.mojom.h"
 
+
 namespace content {
 
+class RenderFrameHost;
+class WebContents;
+
 class CONTENT_EXPORT KeyboardLockServiceImpl
     : public NON_EXPORTED_BASE(blink::mojom::KeyboardLockService) {
  public:
-  KeyboardLockServiceImpl();
+  KeyboardLockServiceImpl(RenderFrameHost* render_frame_host);
   ~KeyboardLockServiceImpl() override;
 
   static void CreateMojoService(
+      RenderFrameHost* render_frame_host,
       blink::mojom::KeyboardLockServiceRequest request);
 
   // blink::mojom::KeyboardLockService implementations.
-  void RequestKeyboardLock(const std::vector<std::string>& key_codes,
-                           RequestKeyboardLockCallback callback) override;
+  void RequestKeyboardLock(
+      const std::vector<std::string>& key_codes,
+      RequestKeyboardLockCallback callback) override;
   void CancelKeyboardLock() override;
+
+ private:
+  WebContents* const web_contents_;
 };
 
 }  // namespace