Fix //content/test:test_support under component builds.

content/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.
 
 import("//tools/grit/grit_rule.gni")
 
 # Applied by targets internal to content.
 config("content_implementation") {
   defines = [ "CONTENT_IMPLEMENTATION" ]
 }
@@ skipping 20 matching lines @@
 #         //content/browser (source set; this is the non-public browser target)
 #         //content/public/common:common_sources (source set)
 #
 # That the internal content dependencies must depend on the *_sources targets
 # to avoid dependency cycles, and external dependencies must depend on the
 # //content/public/browser and similar targets to avoid double-linking (these
 # targets make sure the dependency goes through the content shared library
 # when doing a component build).
 
 content_shared_components = [
-  "//content/gpu",
+  "//content/gpu:gpu_sources",
   "//content/public/browser:browser_sources",
   "//content/public/child:child_sources",
   "//content/public/common:common_sources",
   "//content/public/plugin:plugin_sources",
   "//content/public/renderer:renderer_sources",
   "//content/public/utility:utility_sources",
 ]
 
 if (enable_plugins) {
-  content_shared_components += [ "//content/ppapi_plugin" ]
+  content_shared_components += [ "//content/ppapi_plugin:ppapi_plugin_sources" ]
 }
 
 if (is_component_build) {
   shared_library("content") {
     public_deps =
         content_shared_components + [ "//content/public/app:both_sources" ]
   }
 } else {
   group("content") {
     deps = content_shared_components
@@ skipping 26 matching lines @@
       "public/app/startup_helper_win.h",
     ]
 
     deps = [
       "//base",
       "//base:i18n",
       "//sandbox",
     ]
   }
 }