Show alert failure for reloading unpacked extensions with bad manifest

chrome/browser/ui/webui/extensions/extension_loader_handler.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_UI_WEBUI_EXTENSIONS_EXTENSION_LOADER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_LOADER_HANDLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/scoped_observer.h"
 #include "content/public/browser/web_ui_message_handler.h"
+#include "chrome/browser/extensions/extension_error_reporter.h"
+#include "chrome/browser/extensions/extension_error_reporter_observer.h"
 
 namespace base {
 class ListValue;
 }
 
 namespace content {
 class WebUIDataSource;
 }
 
 class Profile;
+class ExtensionErrorReporter;
+class ExtensionErrorReporterObserver;
 
 namespace extensions {
 
 class Extension;
 
 // The handler page for the Extension Commands UI overlay.
-class ExtensionLoaderHandler : public content::WebUIMessageHandler {
+class ExtensionLoaderHandler : public content::WebUIMessageHandler,
+                               public ExtensionErrorReporterObserver {
  public:
   explicit ExtensionLoaderHandler(Profile* profile);
   virtual ~ExtensionLoaderHandler();
 
   // Fetches the localized values for the page and deposits them into |source|.
   void GetLocalizedValues(content::WebUIDataSource* source);
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
+  virtual void OnLoadFailure(const base::FilePath& file_path,
+                             const std::string& error) OVERRIDE;
+
  private:
   class FileHelper;
 
   // Handle the 'extensionLoaderLoadUnpacked' message.
   void HandleLoadUnpacked(const base::ListValue* args);
 
   // Handle the 'extensionLoaderRetry' message.
   void HandleRetry(const base::ListValue* args);
 
   // Try to load an unpacked extension from the given |file_path|.
   void LoadUnpackedExtensionImpl(const base::FilePath& file_path);
 
   // Called when an unpacked extension fails to load.
-  void OnLoadFailure(const base::FilePath& file_path, const std::string& error);
+  // void OnLoadFailure(const base::FilePath& file_path, const std::string&
+  // error);
 
   // Notify the frontend of the failure. If it was a manifest error, |manifest|
   // will hold the manifest contents, and |line_number| will point to the line
   // at which the error was found.
   void NotifyFrontendOfFailure(const base::FilePath& file_path,
                                const std::string& error,
                                size_t line_number,
                                const std::string& manifest);
 
   // The profile with which this Handler is associated.
   Profile* profile_;
 
   // A helper to manage file picking.
   scoped_ptr<FileHelper> file_helper_;
 
   // The file path to the extension that failed to load, or empty. This is
   // loaded when the user selects "retry".
   base::FilePath failed_path_;
 
   // Weak pointer factory for posting background tasks.
   base::WeakPtrFactory<ExtensionLoaderHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionLoaderHandler);
+
+  ScopedObserver<ExtensionErrorReporter, ExtensionErrorReporterObserver>
+      extension_error_reporter_observer_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_LOADER_HANDLER_H_