Extract InstallVerifier from ExtensionSystem.

chrome/browser/extensions/install_verifier_factory.h

 // Copyright 2015 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_ERROR_CONSOLE_ERROR_CONSOLE_FACTORY_H_
-#define CHROME_BROWSER_EXTENSIONS_ERROR_CONSOLE_ERROR_CONSOLE_FACTORY_H_
+#ifndef CHROME_BROWSER_EXTENSIONS_INSTALL_VERIFIER_FACTORY_H_
+#define CHROME_BROWSER_EXTENSIONS_INSTALL_VERIFIER_FACTORY_H_
 
 #include "base/memory/singleton.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
 namespace extensions {
 
-class ErrorConsole;
+class InstallVerifier;
 
-class ErrorConsoleFactory : public BrowserContextKeyedServiceFactory {
+class InstallVerifierFactory : public BrowserContextKeyedServiceFactory {
  public:
-  static ErrorConsole* GetForBrowserContext(content::BrowserContext* context);
-  static ErrorConsoleFactory* GetInstance();
+  static InstallVerifier* GetForBrowserContext(
+      content::BrowserContext* context);
+  static InstallVerifierFactory* GetInstance();
 
  private:
-  friend struct DefaultSingletonTraits<ErrorConsoleFactory>;
+  friend struct DefaultSingletonTraits<InstallVerifierFactory>;
 
-  ErrorConsoleFactory();
-  ~ErrorConsoleFactory() override;
+  InstallVerifierFactory();
+  ~InstallVerifierFactory() override;
 
   // BrowserContextKeyedServiceFactory implementation
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
 
-  DISALLOW_COPY_AND_ASSIGN(ErrorConsoleFactory);
+  DISALLOW_COPY_AND_ASSIGN(InstallVerifierFactory);
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_BROWSER_EXTENSIONS_ERROR_CONSOLE_ERROR_CONSOLE_FACTORY_H_
+#endif  // CHROME_BROWSER_EXTENSIONS_INSTALL_VERIFIER_FACTORY_H_