Rename ProtocolInterceptJobFactory and make it not use ProtocolHandlers.

net/url_request/url_request_interceptor.h

+// Copyright 2014 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_INTERCEPTOR_H_
+#define NET_URL_REQUEST_URL_REQUEST_INTERCEPTOR_H_
+
+#include "base/macros.h"
+#include "net/base/net_export.h"
+
+namespace net {
+
+class URLRequest;
+class URLRequestJob;
+class NetworkDelegate;
+
+// A URLRequestInterceptor is given a chance to create a URLRequestJob to
+// handle URLRequests before they're handed off to the ProtocolHandler for
+// the request's scheme.
+class NET_EXPORT URLRequestInterceptor {
+ public:
+  URLRequestInterceptor();
+  virtual ~URLRequestInterceptor();
+
+  // Returns a URLRequestJob to handle |request|, if the interceptor wants to
+  // take over the handling the request instead of the default ProtocolHandler.
+  // Otherwise, returns NULL.
+  virtual URLRequestJob* MaybeInterceptRequest(
+      URLRequest* request, NetworkDelegate* network_delegate) const = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(URLRequestInterceptor);
+};
+
+}  // namespace net
+
+#endif  // NET_URL_REQUEST_URL_REQUEST_INTERCEPTOR_H_