Make WebURLLoader capable of retaining received buffers.

content/content_child.gypi

 # Copyright 2013 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/mime_util/mime_util.gyp:mime_util',
     '../components/tracing.gyp:tracing',
     '../components/webcrypto/webcrypto.gyp:webcrypto',
     '../mojo/mojo_base.gyp:mojo_environment_chromium',
     '../mojo/mojo_base.gyp:mojo_common_lib',
     '../skia/skia.gyp:skia',
     '../ui/base/ui_base.gyp:ui_base',
     '../ui/events/events.gyp:gestures_blink',
     '../ui/gfx/gfx.gyp:gfx',
     '../ui/gfx/gfx.gyp:gfx_geometry',
     '../url/url.gyp:url_lib',
     'content_common_mojo_bindings.gyp:content_common_mojo_bindings',
   ],
   'include_dirs': [
     '..',
   ],
   'export_dependent_settings': [
     '../base/base.gyp:base',
   ],
   'variables': {
     'public_child_sources': [
       'public/child/child_thread.h',
+      'public/child/fixed_received_data.cc',
+      'public/child/fixed_received_data.h',
       'public/child/image_decoder_utils.h',
       'public/child/request_peer.h',
       'public/child/resource_dispatcher_delegate.h',
       'public/child/v8_value_converter.h',
     ],
     'private_child_sources': [
       'child/appcache/appcache_backend_proxy.cc',
       'child/appcache/appcache_backend_proxy.h',
       'child/appcache/appcache_dispatcher.cc',
       'child/appcache/appcache_dispatcher.h',
@@ skipping 158 matching lines @@
       'child/request_info.cc',
       'child/request_info.h',
       'child/resource_dispatcher.cc',
       'child/resource_dispatcher.h',
       'child/resource_scheduling_filter.cc',
       'child/resource_scheduling_filter.h',
       'child/runtime_features.cc',
       'child/runtime_features.h',
       'child/scoped_child_process_reference.cc',
       'child/scoped_child_process_reference.h',
+      'child/shared_memory_received_data_factory.cc',
+      'child/shared_memory_received_data_factory.h',
       'child/service_worker/service_worker_dispatcher.cc',
       'child/service_worker/service_worker_dispatcher.h',
       'child/service_worker/service_worker_handle_reference.cc',
       'child/service_worker/service_worker_handle_reference.h',
       'child/service_worker/service_worker_message_filter.cc',
       'child/service_worker/service_worker_message_filter.h',
       'child/service_worker/service_worker_network_provider.cc',
       'child/service_worker/service_worker_network_provider.h',
       'child/service_worker/service_worker_provider_context.cc',
       'child/service_worker/service_worker_provider_context.h',
@@ skipping 110 matching lines @@
         'child/npapi/webplugin_delegate_impl_mac.mm',
       ],
     }],
     ['OS=="win"', {
       'sources!': [
         'child/npapi/webplugin_delegate_impl_aura.cc',
       ],
     }],
   ],
 }