Revert of Move core web_view code to extensions.

extensions/browser/guest_view/web_view/javascript_dialog_helper.h

Index: extensions/browser/guest_view/web_view/javascript_dialog_helper.h
diff --git a/extensions/browser/guest_view/web_view/javascript_dialog_helper.h b/extensions/browser/guest_view/web_view/javascript_dialog_helper.h
deleted file mode 100644
index d9ceee90eb1d81168f6730c2e4b8b7f759f9ae47..0000000000000000000000000000000000000000
--- a/extensions/browser/guest_view/web_view/javascript_dialog_helper.h
+++ /dev/null
@@ -1,57 +0,0 @@
-// 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 EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_JAVASCRIPT_DIALOG_HELPER_H_
-#define EXTENSIONS_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  // EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_JAVASCRIPT_DIALOG_HELPER_H_