Add HttpProtocolHandler and convert everything to use it

net/url_request/url_request_job_factory_impl.h

 // Copyright (c) 2011 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 NET_URL_REQUEST_URL_REQUEST_JOB_FACTORY_IMPL_H_
 #define NET_URL_REQUEST_URL_REQUEST_JOB_FACTORY_IMPL_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "net/base/net_export.h"
 #include "net/url_request/url_request_job_factory.h"
 
 namespace net {
 
 class URLRequestInterceptor;
 
 class NET_EXPORT URLRequestJobFactoryImpl : public URLRequestJobFactory {
  public:
   URLRequestJobFactoryImpl();
   ~URLRequestJobFactoryImpl() override;
 
+  static std::unique_ptr<URLRequestJobFactoryImpl>
+  CreateWithDefaultProtocolHandlers();

[mmenke, 2016/04/21 20:58:01]

Think this needs a comment mentioning what schemes this adds support for.

[mmenke, 2016/04/21 20:58:01]

Maybe rename with CreateWithHttpProtocolHandlers?  That does make it harder to
change its behavior, but I don't think we want to change what the defaults are,
anyways.  ws/wss support doesn't become any clearer, but given we don't support
it on iOS, don't think we can improve the name to make that clearer.

[mgersh, 2016/04/22 20:27:15]

Done.

[mgersh, 2016/04/22 20:27:15]

Done.

+
   // Sets the ProtocolHandler for a scheme. Returns true on success, false on
   // failure (a ProtocolHandler already exists for |scheme|).
   bool SetProtocolHandler(const std::string& scheme,
                           std::unique_ptr<ProtocolHandler> protocol_handler);
 
   // URLRequestJobFactory implementation
   URLRequestJob* MaybeCreateJobWithProtocolHandler(
       const std::string& scheme,
       URLRequest* request,
       NetworkDelegate* network_delegate) const override;
@@ skipping 27 matching lines @@
   static void SetInterceptorForTesting(URLRequestInterceptor* interceptor);
 
   ProtocolHandlerMap protocol_handler_map_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestJobFactoryImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_JOB_FACTORY_IMPL_H_