Revert of Fix the handling of user gestures for external protocol handler dialogs.

chrome/browser/external_protocol/external_protocol_observer.h

+// Copyright (c) 2011 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_EXTERNAL_PROTOCOL_EXTERNAL_PROTOCOL_OBSERVER_H_
+#define CHROME_BROWSER_EXTERNAL_PROTOCOL_EXTERNAL_PROTOCOL_OBSERVER_H_
+
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+
+// ExternalProtocolObserver is responsible for handling messages from
+// WebContents relating to external protocols.
+class ExternalProtocolObserver
+    : public content::WebContentsObserver,
+      public content::WebContentsUserData<ExternalProtocolObserver> {
+ public:
+  virtual ~ExternalProtocolObserver();
+
+  // content::WebContentsObserver overrides.
+  virtual void DidGetUserGesture() OVERRIDE;
+
+ private:
+  explicit ExternalProtocolObserver(content::WebContents* web_contents);
+  friend class content::WebContentsUserData<ExternalProtocolObserver>;
+
+  DISALLOW_COPY_AND_ASSIGN(ExternalProtocolObserver);
+};
+
+#endif  // CHROME_BROWSER_EXTERNAL_PROTOCOL_EXTERNAL_PROTOCOL_OBSERVER_H_