Revert of Move core web_view code to extensions.

chrome/browser/guest_view/web_view/javascript_dialog_helper.h

+// Copyright 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 CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_JAVASCRIPT_DIALOG_HELPER_H_
+#define CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_JAVASCRIPT_DIALOG_HELPER_H_
+
+#include "content/public/browser/javascript_dialog_manager.h"
+
+namespace extensions {
+
+class WebViewGuest;
+
+class JavaScriptDialogHelper : public content::JavaScriptDialogManager {
+ public:
+  explicit JavaScriptDialogHelper(WebViewGuest* guest);
+  virtual ~JavaScriptDialogHelper();
+
+  // JavaScriptDialogManager implementation.
+  virtual void RunJavaScriptDialog(
+      content::WebContents* web_contents,
+      const GURL& origin_url,
+      const std::string& accept_lang,
+      content::JavaScriptMessageType javascript_message_type,
+      const base::string16& message_text,
+      const base::string16& default_prompt_text,
+      const DialogClosedCallback& callback,
+      bool* did_suppress_message) OVERRIDE;
+  virtual void RunBeforeUnloadDialog(
+      content::WebContents* web_contents,
+      const base::string16& message_text,
+      bool is_reload,
+      const DialogClosedCallback& callback) OVERRIDE;
+  virtual bool HandleJavaScriptDialog(
+      content::WebContents* web_contents,
+      bool accept,
+      const base::string16* prompt_override) OVERRIDE;
+  virtual void CancelActiveAndPendingDialogs(
+      content::WebContents* web_contents) OVERRIDE;
+  virtual void WebContentsDestroyed(
+      content::WebContents* web_contents) OVERRIDE;
+
+ private:
+  void OnPermissionResponse(
+      const DialogClosedCallback& callback,
+      bool allow,
+      const std::string& user_input);
+
+  // Pointer to the webview that is being helped.
+  WebViewGuest* const web_view_guest_;
+
+  DISALLOW_COPY_AND_ASSIGN(JavaScriptDialogHelper);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_JAVASCRIPT_DIALOG_HELPER_H_