Add a browser test for access control for file: scheme

chrome/browser/net/chrome_network_delegate.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_NET_CHROME_NETWORK_DELEGATE_H_
 #define CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 116 matching lines @@
       BooleanPrefMember* force_google_safe_search,
       IntegerPrefMember* force_youtube_restrict,
       StringPrefMember* allowed_domains_for_apps,
       PrefService* pref_service);
 
   // Returns true if access to |path| is allowed. |profile_path| is used to
   // locate certain paths on Chrome OS. See set_profile_path() for details.
   static bool IsAccessAllowed(const base::FilePath& path,
                               const base::FilePath& profile_path);
 
+  // Enables access to all files for testing purposes. This function is used
+  // to bypass the access control for file: scheme. Calling this function
+  // with false brings back the original (production) behaviors.
+  static void EnableAccessToAllFilesForTesting(bool enabled);
+
  private:
   // NetworkDelegate implementation.
   int OnBeforeURLRequest(net::URLRequest* request,
                          const net::CompletionCallback& callback,
                          GURL* new_url) override;
   int OnBeforeStartTransaction(net::URLRequest* request,
                                const net::CompletionCallback& callback,
                                net::HttpRequestHeaders* headers) override;
   void OnStartTransaction(net::URLRequest* request,
                           const net::HttpRequestHeaders& headers) override;
@@ skipping 71 matching lines @@
 
   // Aggregates and reports network usage.
   data_usage::DataUseAggregator* data_use_aggregator_;
   // Controls whether network usage is reported as being off the record.
   bool is_data_usage_off_the_record_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeNetworkDelegate);
 };
 
 #endif  // CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_