Roll Chrome into Mojo.

net/http/http_cache.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.
 
 // This file declares a HttpTransactionFactory implementation that can be
 // layered on top of another HttpTransactionFactory to add HTTP caching.  The
 // caching logic follows RFC 2616 (any exceptions are called out in the code).
 //
 // The HttpCache takes a disk_cache::Backend as a parameter, and uses that for
 // the cache storage.
@@ skipping 184 matching lines @@
 
   // Initializes the Infinite Cache, if selected by the field trial.
   void InitializeInfiniteCache(const base::FilePath& path);
 
   // Causes all transactions created after this point to effectively bypass
   // the cache lock whenever there is lock contention.
   void BypassLockForTest() {
     bypass_lock_for_test_ = true;
   }
 
+  // Causes all transactions created after this point to generate a failure
+  // when attempting to conditionalize a network request.
+  void FailConditionalizationForTest() {
+    fail_conditionalization_for_test_ = true;
+  }
+
   bool use_stale_while_revalidate() const {
     return use_stale_while_revalidate_;
   }
 
   // Enable stale_while_revalidate functionality for testing purposes.
   void set_use_stale_while_revalidate_for_testing(
       bool use_stale_while_revalidate) {
     use_stale_while_revalidate_ = use_stale_while_revalidate;
   }
 
@@ skipping 204 matching lines @@
   void OnBackendCreated(int result, PendingOp* pending_op);
 
   // Variables ----------------------------------------------------------------
 
   NetLog* net_log_;
 
   // Used when lazily constructing the disk_cache_.
   scoped_ptr<BackendFactory> backend_factory_;
   bool building_backend_;
   bool bypass_lock_for_test_;
+  bool fail_conditionalization_for_test_;
 
   // true if the implementation of Cache-Control: stale-while-revalidate
   // directive is enabled (either via command-line flag or experiment).
   bool use_stale_while_revalidate_;
 
   Mode mode_;
 
   scoped_ptr<QuicServerInfoFactoryAdaptor> quic_server_info_factory_;
 
   scoped_ptr<HttpTransactionFactory> network_layer_;
@@ skipping 17 matching lines @@
   AsyncValidationMap async_validations_;
 
   base::WeakPtrFactory<HttpCache> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpCache);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_H_