[Android WebView] Get rid of secondary HttpNetworkSession

net/url_request/url_request_context_builder.cc

 // 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.
 
 #include "net/url_request/url_request_context_builder.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 380 matching lines @@
   network_session_params.enable_quic = http_network_session_params_.enable_quic;
   network_session_params.quic_connection_options =
       http_network_session_params_.quic_connection_options;
 
   storage->set_http_network_session(
       make_scoped_ptr(new HttpNetworkSession(network_session_params)));
 
   scoped_ptr<HttpTransactionFactory> http_transaction_factory;
   if (http_cache_enabled_) {
     scoped_ptr<HttpCache::BackendFactory> http_cache_backend;
-    if (http_cache_params_.type == HttpCacheParams::DISK) {
+    if (http_cache_params_.type != HttpCacheParams::IN_MEMORY) {
+      BackendType backend_type =
+          http_cache_params_.type == HttpCacheParams::DISK
+              ? CACHE_BACKEND_DEFAULT
+              : CACHE_BACKEND_SIMPLE;
       http_cache_backend.reset(new HttpCache::DefaultBackend(
-          DISK_CACHE, CACHE_BACKEND_DEFAULT, http_cache_params_.path,
+          DISK_CACHE, backend_type, http_cache_params_.path,
           http_cache_params_.max_size, context->GetFileTaskRunner()));
     } else {
       http_cache_backend =
           HttpCache::DefaultBackend::InMemory(http_cache_params_.max_size);
     }
 
     http_transaction_factory.reset(new HttpCache(
         storage->http_network_session(), http_cache_backend.Pass(), true));
   } else {
     http_transaction_factory.reset(
@@ skipping 36 matching lines @@
     }
     url_request_interceptors_.weak_clear();
   }
   storage->set_job_factory(top_job_factory.Pass());
   // TODO(willchan): Support sdch.
 
   return context.Pass();
 }
 
 }  // namespace net