Refactor main URLRequestContext creation to use URLRequestContextBuilder

chrome/browser/profiles/profile_impl_io_data.h

Index: chrome/browser/profiles/profile_impl_io_data.h
diff --git a/chrome/browser/profiles/profile_impl_io_data.h b/chrome/browser/profiles/profile_impl_io_data.h
index 1eca955b6652b5c362e5fa3d51d014963230a9f6..32c65b2f3e7fd5879d249b95b7ecbb0ad0ac3e81 100644
--- a/chrome/browser/profiles/profile_impl_io_data.h
+++ b/chrome/browser/profiles/profile_impl_io_data.h
@@ -172,8 +172,8 @@ class ProfileImplIOData : public ProfileIOData {
       scoped_ptr<ChromeNetworkDelegate> chrome_network_delegate,
       ProfileParams* profile_params,
       content::ProtocolHandlerMap* protocol_handlers,
-      content::URLRequestInterceptorScopedVector
-          request_interceptors) const override;
+      content::URLRequestInterceptorScopedVector request_interceptors,
+      net::URLRequestContextBuilder* context_builder) const override;
   void InitializeExtensionsRequestContext(
       ProfileParams* profile_params) const override;
   net::URLRequestContext* InitializeAppRequestContext(
@@ -200,6 +200,9 @@ class ProfileImplIOData : public ProfileIOData {
       net::URLRequestContext* app_context,
       const StoragePartitionDescriptor& partition_descriptor) const override;
 
+  void InitPostContextSetup(
+      ChromeNetworkDelegate* chrome_network_delegate) const override;
+
   // Deletes all network related data since |time|. It deletes transport
   // security state since |time| and also deletes HttpServerProperties data.
   // Works asynchronously, however if the |completion| callback is non-null,
@@ -207,15 +210,11 @@ class ProfileImplIOData : public ProfileIOData {
   void ClearNetworkingHistorySinceOnIOThread(base::Time time,
                                              const base::Closure& completion);
 
-  mutable scoped_ptr<data_reduction_proxy::DataReductionProxyNetworkDelegate>
-       network_delegate_;
-
   // Lazy initialization params.
   mutable scoped_ptr<LazyParams> lazy_params_;
 
   mutable scoped_refptr<JsonPrefStore> network_json_store_;
 
-  mutable scoped_ptr<net::HttpTransactionFactory> main_http_factory_;
   mutable scoped_ptr<net::FtpTransactionFactory> ftp_factory_;
 
   // Same as |ProfileIOData::http_server_properties_|, owned there to maintain
@@ -226,7 +225,6 @@ class ProfileImplIOData : public ProfileIOData {
 
   mutable scoped_ptr<net::URLRequestContext> media_request_context_;
 
-  mutable scoped_ptr<net::URLRequestJobFactory> main_job_factory_;
   mutable scoped_ptr<net::URLRequestJobFactory> extensions_job_factory_;
 
   mutable scoped_ptr<domain_reliability::DomainReliabilityMonitor>