Only depend on child sources from app in both target

content/public/app/BUILD.gn

 # Copyright 2014 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.
 
 # App different than the regular content subcomponents (see comments in
 # //content/BUILD.gn) because it has to support the browser/child process split
 # (the "both" target include both browser and child process files and is used
 # for testing).
 #
 # In non-component mode, browser, child, and both all follow the same structure:
@@ skipping 20 matching lines @@
   "content_main_delegate.h",
   "content_main_runner.h",
   "sandbox_helper_win.h",
 ]
 
 public_app_shared_deps = [
   "//base",
   "//base:i18n",
   "//content:export",
   "//content/public/common:common_sources",
-  "//content/public/gpu:gpu_sources",
-  "//content/public/renderer:renderer_sources",
-  "//content/public/utility:utility_sources",
 ]
 
+if (!is_win || is_component_build) {
+  public_app_shared_deps += [

[brettw, 2017/01/12 22:51:37]

Can you add a comment here about why this is necessary?

+    "//content/public/gpu:gpu_sources",
+    "//content/public/renderer:renderer_sources",
+    "//content/public/utility:utility_sources",
+  ]
+}
+
 if (use_aura) {
   public_app_shared_deps += [ "//ui/aura" ]
 }
 
 if (is_component_build) {
   source_set("both_sources") {
     # Only the main content shared library can pull this in.
     visibility = [ "//content:content" ]
 
     sources = public_app_shared_sources
@@ skipping 142 matching lines @@
 
 service_manifest("renderer_manifest") {
   name = "content_renderer"
   source = "mojo/content_renderer_manifest.json"
 }
 
 service_manifest("utility_manifest") {
   name = "content_utility"
   source = "mojo/content_utility_manifest.json"
 }