Make component build Chrome link.

build/config/linux/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/linux/pkg_config.gni")
 import("//build/config/features.gni")
 import("//build/config/sysroot.gni")
 import("//build/config/ui.gni")
 import("//tools/generate_library_loader/generate_library_loader.gni")
 
@@ skipping 154 matching lines @@
 pkg_config("gio_config") {
   packages = [ "gio-2.0" ]
   # glib >=2.40 deprecate g_settings_list_schemas in favor of
   # g_settings_schema_source_list_schemas. This function is not available on
   # earlier versions that we still need to support (specifically, 2.32), so
   # disable the warning with the GLIB_DISABLE_DEPRECATION_WARNINGS define.
   # TODO(mgiuca): Remove this suppression when we drop support for Ubuntu 13.10
   # (saucy) and earlier. Update the code to use
   # g_settings_schema_source_list_schemas instead.
   defines = [ "USE_GIO", "GLIB_DISABLE_DEPRECATION_WARNINGS" ]
-  ignore_libs = true  # Loader generated below.
+ 
+  # TODO(brettw) Theoretically I think ignore_libs should be set so that we
+  # don't link directly to GIO and use the loader generated below. But the gio
+  # target in GYP doesn't make any sense to me and appears to link directly to
+  # GIO in addition to making a loader. This this uncommented, the link in
+  # component build fails, so I think this is closer to the GYP build.
+  #ignore_libs = true  # Loader generated below.
 }
 
 # This generates a target named "gio".
 generate_library_loader("gio") {
   name = "LibGioLoader"
   output_h = "libgio.h"
   output_cc = "libgio_loader.cc"
   header = "<gio/gio.h>"
   config = ":gio_config"
 
@@ skipping 19 matching lines @@
     "pci_alloc",
     "pci_init",
     "pci_cleanup",
     "pci_scan_bus",
     "pci_fill_info",
     "pci_lookup_name",
   ]
 }
 
 # Looking for libspeechd? Use //third_party/speech-dispatcher