Add quiet safe browsing interstitial for WebView

chrome/browser/safe_browsing/safe_browsing_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.
 //
 // The Safe Browsing service is responsible for downloading anti-phishing and
 // anti-malware tables and checking urls against them.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_
 
@@ skipping 216 matching lines @@
   virtual SafeBrowsingProtocolManagerDelegate* GetProtocolManagerDelegate();
 
   std::unique_ptr<ServicesDelegate> services_delegate_;
 
  private:
   friend class SafeBrowsingServiceFactoryImpl;
   friend struct content::BrowserThread::DeleteOnThread<
       content::BrowserThread::UI>;
   friend class base::DeleteHelper<SafeBrowsingService>;
   friend class SafeBrowsingBlockingPageTest;
+  friend class SafeBrowsingBlockingQuietPageTest;
   friend class SafeBrowsingServerTest;
   friend class SafeBrowsingServiceTest;
   friend class SafeBrowsingURLRequestContextGetter;
   friend class TestSafeBrowsingService;
   friend class TestSafeBrowsingServiceFactory;
 
   // Called to initialize objects that are used on the io_thread.  This may be
   // called multiple times during the life of the SafeBrowsingService.
   void StartOnIOThread(
       net::URLRequestContextGetter* url_request_context_getter);
@@ skipping 126 matching lines @@
   SafeBrowsingServiceFactory() { }
   virtual ~SafeBrowsingServiceFactory() { }
   virtual SafeBrowsingService* CreateSafeBrowsingService() = 0;
  private:
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingServiceFactory);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_