Make request fail with ERR_CONTENT_DECODING_INIT_FAILED if sdch is not supported

net/url_request/url_request_http_job.cc

 // Copyright (c) 2012 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.
 
 #include "net/url_request/url_request_http_job.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 1099 matching lines @@
            types.rbegin();
        r_iter != types.rend(); ++r_iter) {
     std::unique_ptr<FilterSourceStream> downstream;
     SourceStream::SourceType type = *r_iter;
     switch (type) {
       case SourceStream::TYPE_BROTLI:
         downstream = CreateBrotliSourceStream(std::move(upstream));
         break;
       case SourceStream::TYPE_SDCH:
       case SourceStream::TYPE_SDCH_POSSIBLE: {
-        GURL url = request()->url();
-        std::unique_ptr<SdchPolicyDelegate> delegate(new SdchPolicyDelegate(
-            type == SourceStream::TYPE_SDCH_POSSIBLE, this, mime_type, url,
-            is_cached_content_, request()->context()->sdch_manager(),
-            std::move(dictionaries_advertised_), GetResponseCode(),
-            request()->net_log()));
-        downstream.reset(new SdchSourceStream(std::move(upstream),
-                                              std::move(delegate), type));
+        if (request()->context()->sdch_manager()) {
+          GURL url = request()->url();
+          std::unique_ptr<SdchPolicyDelegate> delegate(new SdchPolicyDelegate(
+              type == SourceStream::TYPE_SDCH_POSSIBLE, this, mime_type, url,
+              is_cached_content_, request()->context()->sdch_manager(),
+              std::move(dictionaries_advertised_), GetResponseCode(),
+              request()->net_log()));
+          downstream.reset(new SdchSourceStream(std::move(upstream),
+                                                std::move(delegate), type));
+        }
         break;
       }
       case SourceStream::TYPE_GZIP:
       case SourceStream::TYPE_DEFLATE:
       case SourceStream::TYPE_GZIP_FALLBACK:
         downstream = GzipSourceStream::Create(std::move(upstream), type);
         break;
       case SourceStream::TYPE_NONE:
       case SourceStream::TYPE_INVALID:
       case SourceStream::TYPE_MAX:
@@ skipping 421 matching lines @@
   // Notify NetworkQualityEstimator.
   if (request()) {
     NetworkQualityEstimator* network_quality_estimator =
         request()->context()->network_quality_estimator();
     if (network_quality_estimator)
       network_quality_estimator->NotifyURLRequestDestroyed(*request());
   }
 }
 
 }  // namespace net