[Extensions] Make chrome://extensions use developerPrivate for error calls

chrome/browser/ui/webui/extensions/extension_error_handler.h

-// Copyright 2013 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_UI_WEBUI_EXTENSIONS_EXTENSION_ERROR_HANDLER_H_
-#define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_ERROR_HANDLER_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/weak_ptr.h"
-#include "content/public/browser/web_ui_message_handler.h"
-
-namespace base {
-class DictionaryValue;
-class ListValue;
-}
-
-namespace content {
-class WebUIDataSource;
-}
-
-class Profile;
-
-namespace extensions {
-
-class Extension;
-
-// The handler page for the Extension Commands UI overlay.
-class ExtensionErrorHandler : public content::WebUIMessageHandler {
- public:
-  explicit ExtensionErrorHandler(Profile* profile);
-  ~ExtensionErrorHandler() override;
-
-  // Fetches the localized values for the page and deposits them into |source|.
-  void GetLocalizedValues(content::WebUIDataSource* source);
-
-  // WebUIMessageHandler implementation.
-  void RegisterMessages() override;
-
- private:
-  friend class ManifestHighlightUnitTest;
-
-  // Handle the "requestFileSource" call.
-  void HandleRequestFileSource(const base::ListValue* args);
-
-  // Called when |error_ui_util::HandleRequestFileSource| finishes.
-  void OnFileSourceHandled(const base::DictionaryValue& source);
-
-  // Handle the "openDevTools" call.
-  void HandleOpenDevTools(const base::ListValue* args);
-
-  // Populate the results for a manifest file's content in response to the
-  // "requestFileSource" call. Highlight the part of the manifest which
-  // corresponds to the given |key| and |specific| locations. Caller owns
-  // |dict|.
-  void GetManifestFileCallback(base::DictionaryValue* dict,
-                               const std::string& key,
-                               const std::string& specific,
-                               const std::string& contents);
-
-  // Populate the results for a source file's content in response to the
-  // "requestFileSource" call. Highlight the part of the source which
-  // corresponds to the given |line_number|.
-  void GetSourceFileCallback(base::DictionaryValue* results,
-                             int line_number,
-                             const std::string& contents);
-
-  // The profile with which this Handler is associated.
-  Profile* profile_;
-
-  // Weak pointer factory for posting background tasks.
-  base::WeakPtrFactory<ExtensionErrorHandler> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ExtensionErrorHandler);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_ERROR_HANDLER_H_