Headless: Remove obsolete Mojo code and some other obsolete APIs

headless/public/util/generic_url_request_job.h

 // Copyright 2016 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 HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_
 #define HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_
 
 #include <stddef.h>
 #include <functional>
 #include <memory>
@@ skipping 137 matching lines @@
         scoped_refptr<net::HttpResponseHeaders> response_headers,
         const char* body,
         size_t body_size) = 0;
 
    protected:
     virtual ~Delegate() {}
   };
 
   // NOTE |url_request_dispatcher| and |delegate| must outlive the
   // GenericURLRequestJob.
-  // TODO(alexclarke): Remove the default parameter.
-  GenericURLRequestJob(
-      net::URLRequest* request,
-      net::NetworkDelegate* network_delegate,
-      URLRequestDispatcher* url_request_dispatcher,
-      std::unique_ptr<URLFetcher> url_fetcher,
-      Delegate* delegate,
-      HeadlessBrowserContext* headless_browser_context = nullptr);
+  GenericURLRequestJob(net::URLRequest* request,
+                       net::NetworkDelegate* network_delegate,
+                       URLRequestDispatcher* url_request_dispatcher,
+                       std::unique_ptr<URLFetcher> url_fetcher,
+                       Delegate* delegate,
+                       HeadlessBrowserContext* headless_browser_context);
   ~GenericURLRequestJob() override;
 
   // net::URLRequestJob implementation:
   void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override;
   void Start() override;
   int ReadRawData(net::IOBuffer* buf, int buf_size) override;
   void GetResponseInfo(net::HttpResponseInfo* info) override;
   bool GetMimeType(std::string* mime_type) const override;
   bool GetCharset(std::string* charset) override;
   void GetLoadTimingInfo(net::LoadTimingInfo* load_timing_info) const override;
@@ skipping 50 matching lines @@
   static uint64_t next_request_id_;
 
   base::WeakPtrFactory<GenericURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GenericURLRequestJob);
 };
 
 }  // namespace headless
 
 #endif  // HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_