Add the ability for DevTools to wrap network transactions.

tools/gn/secondary/chrome/BUILD.gn

 # Copyright (c) 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/ui.gni")
 import("//tools/grit/grit_rule.gni")
 
 executable("chrome") {
   sources = [
@@ skipping 104 matching lines @@
     "browser/devtools/browser_list_tabcontents_provider.cc",
     "browser/devtools/browser_list_tabcontents_provider.h",
     "browser/devtools/devtools_contents_resizing_strategy.cc",
     "browser/devtools/devtools_contents_resizing_strategy.h",
     "browser/devtools/devtools_embedder_message_dispatcher.cc",
     "browser/devtools/devtools_embedder_message_dispatcher.h",
     "browser/devtools/devtools_file_helper.cc",
     "browser/devtools/devtools_file_helper.h",
     "browser/devtools/devtools_file_system_indexer.cc",
     "browser/devtools/devtools_file_system_indexer.h",
+    "browser/devtools/devtools_network_controller.cpp",
+    "browser/devtools/devtools_network_controller.h",
+    "browser/devtools/devtools_network_transaction.cpp",
+    "browser/devtools/devtools_network_transaction.h",
+    "browser/devtools/devtools_network_transaction_factory.cpp",
+    "browser/devtools/devtools_network_transaction_factory.h",
     "browser/devtools/devtools_protocol.cc",
     "browser/devtools/devtools_protocol.h",
     "browser/devtools/devtools_toggle_action.h",
     "browser/devtools/devtools_window.cc",
     "browser/devtools/devtools_window.h",
     "browser/devtools/remote_debugging_server.cc",
     "browser/devtools/remote_debugging_server.h",
   ]
 
   deps = [
@@ skipping 149 matching lines @@
 #}
 #grit("translate_internals_resources") {
 #  source = "browser/resources/translate_internals_resources.grd"
 #}
 #
 ## TODO(brettw) rename "app_theme_resources" or something when we don't support
 ## GYP any more. This name is required to match the GYP build.
 #grit("theme_resources") {
 #  source = "app/theme/theme_resources.grd"
 #}