Add HttpProtocolHandler and convert everything to use it

net/url_request/url_request_job_factory_impl.cc

Index: net/url_request/url_request_job_factory_impl.cc
diff --git a/net/url_request/url_request_job_factory_impl.cc b/net/url_request/url_request_job_factory_impl.cc
index af97e620850c1ebc565f7c6387bfe3fc124c6f92..681c94157132de4e495f8c3fcda515b77c561fd2 100644
--- a/net/url_request/url_request_job_factory_impl.cc
+++ b/net/url_request/url_request_job_factory_impl.cc
@@ -4,11 +4,14 @@
 
 #include "net/url_request/url_request_job_factory_impl.h"
 
+#include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "net/base/load_flags.h"
+#include "net/url_request/http_protocol_handler.h"
 #include "net/url_request/url_request_interceptor.h"
 #include "net/url_request/url_request_job_manager.h"
 #include "url/gurl.h"
+#include "url/url_constants.h"
 
 namespace net {
 
@@ -22,6 +25,26 @@ URLRequestJobFactoryImpl::URLRequestJobFactoryImpl() {}
 
 URLRequestJobFactoryImpl::~URLRequestJobFactoryImpl() {}
 
+// static
+std::unique_ptr<URLRequestJobFactoryImpl>
+URLRequestJobFactoryImpl::CreateWithHttpProtocolHandlers() {
+  std::unique_ptr<URLRequestJobFactoryImpl> job_factory(
+      new URLRequestJobFactoryImpl);
+  job_factory->SetProtocolHandler(url::kHttpScheme,
+                                  base::WrapUnique(new HttpProtocolHandler));
+  job_factory->SetProtocolHandler(url::kHttpsScheme,
+                                  base::WrapUnique(new HttpProtocolHandler));
+
+#if !defined(OS_IOS)
+  job_factory->SetProtocolHandler(url::kWsScheme,
+                                  base::WrapUnique(new HttpProtocolHandler));
+  job_factory->SetProtocolHandler(url::kWssScheme,
+                                  base::WrapUnique(new HttpProtocolHandler));
+#endif  // !defined(OS_IOS)
+
+  return job_factory;
+}
+
 bool URLRequestJobFactoryImpl::SetProtocolHandler(
     const std::string& scheme,
     std::unique_ptr<ProtocolHandler> protocol_handler) {
@@ -76,8 +99,7 @@ URLRequestJob* URLRequestJobFactoryImpl::MaybeInterceptResponse(
 bool URLRequestJobFactoryImpl::IsHandledProtocol(
     const std::string& scheme) const {
   DCHECK(CalledOnValidThread());
-  return ContainsKey(protocol_handler_map_, scheme) ||
-         URLRequestJobManager::SupportsScheme(scheme);
+  return ContainsKey(protocol_handler_map_, scheme);
 }
 
 bool URLRequestJobFactoryImpl::IsHandledURL(const GURL& url) const {