Cleanup from https://codereview.chromium.org/263643005/

chrome/browser/extensions/extension_service.h

 // Copyright (c) 2012 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_EXTENSIONS_EXTENSION_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 324 matching lines @@
 
   virtual base::SequencedTaskRunner* GetFileTaskRunner() OVERRIDE;
 
   extensions::ComponentLoader* component_loader() {
     return component_loader_.get();
   }
 
   // Note that this may return NULL if autoupdate is not turned on.
   extensions::ExtensionUpdater* updater();
 
-  // Notify the frontend that there was an error loading an extension.
-  // This method is public because UnpackedInstaller and InstalledLoader
-  // can post to here.
-  // TODO(aa): Remove this. It doesn't do enough to be worth the dependency
-  // of these classes on ExtensionService.
-  void ReportExtensionLoadError(const base::FilePath& extension_path,
-                                const std::string& error);
-
   // ExtensionHost of background page calls this method right after its render
   // view has been created.
   void DidCreateRenderViewForBackgroundPage(extensions::ExtensionHost* host);
 
   // For the extension in |version_path| with |id|, check to see if it's an
   // externally managed extension.  If so, uninstall it.
   void CheckExternalUninstall(const std::string& id);
 
   // Changes sequenced task runner for crx installation tasks to |task_runner|.
   void SetFileTaskRunnerForTesting(base::SequencedTaskRunner* task_runner);
@@ skipping 349 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            GreylistedExtensionDisabled);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            GreylistDontEnableManuallyDisabled);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            GreylistUnknownDontChange);
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_