Implement chrome://view-http-cache with network service.

content/network/BUILD.gn

 # Copyright 2017 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.
 
 import("//services/service_manager/public/service_manifest.gni")
 
 group("network") {
   visibility = [ "//content/*" ]  # This is an internal content API.
 
   if (is_component_build) {
@@ skipping 10 matching lines @@
 source_set("network_sources") {
   # Depend on via ":network above.
   visibility = [
     ":network",
     "//content",  # For the component build.
     "//content/app:*",
     "//content/utility:utility",
   ]
 
   sources = [
+    "cache_url_loader.cc",
+    "cache_url_loader.h",
     "net_adapters.cc",
     "net_adapters.h",
     "network_context.cc",
     "network_context.h",
     "network_service.cc",
     "network_service.h",
     "network_service_url_loader_factory_impl.cc",
     "network_service_url_loader_factory_impl.h",
     "url_loader_impl.cc",
     "url_loader_impl.h",
@@ skipping 11 matching lines @@
     "//net",
     "//services/service_manager/public/cpp",
     "//services/service_manager/public/interfaces",
   ]
 }
 
 service_manifest("manifest") {
   name = "network"
   source = "manifest.json"
 }