Move files from the secondary GN directory to build.

tools/gn/secondary/build/config/linux/BUILD.gn

Index: tools/gn/secondary/build/config/linux/BUILD.gn
diff --git a/tools/gn/secondary/build/config/linux/BUILD.gn b/tools/gn/secondary/build/config/linux/BUILD.gn
deleted file mode 100644
index 1a9507c07ef8e597a90bff8afbb526c3f2216ba8..0000000000000000000000000000000000000000
--- a/tools/gn/secondary/build/config/linux/BUILD.gn
+++ /dev/null
@@ -1,86 +0,0 @@
-# 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.
-
-# Sets up the dynamic library search path to include our "lib" directory.
-config("executable_ldconfig") {
-  ldflags = [
-    # Want to pass "\$". Need to escape both '\' and '$'. GN will re-escape as
-    # required for ninja.
-    "-Wl,-rpath=\\\$ORIGIN/lib/",
-
-    "-Wl,-rpath-link=lib/",
-  ]
-}
-
-# This script returns a list consisting of two nested lists: the first is the
-# list of cflags, the second are the linker flags.
-pkg_script = "pkg-config.py"
-
-config("fontconfig") {
-  libs = [ "fontconfig" ]
-}
-
-config("freetype2") {
-  pkgresult = exec_script(pkg_script, [ "freetype2" ], "value")
-  include_dirs = pkgresult[0]
-  cflags = pkgresult[1]
-  libs = pkgresult[2]
-  lib_dirs = pkgresult[3]
-}
-
-config("glib") {
-  pkgresult = exec_script(pkg_script,
-    [ "glib-2.0", "gmodule-2.0", "gobject-2.0", "gthread-2.0" ], "value" )
-  include_dirs = pkgresult[0]
-  cflags = pkgresult[1]
-  libs = pkgresult[2]
-  lib_dirs = pkgresult[3]
-}
-
-config("gtk") {
-  # Gtk requires gmodule, but it does not list it as a dependency in some
-  # misconfigured systems.
-  pkgresult = exec_script(pkg_script,
-    [ "gmodule-2.0", "gtk+-2.0", "gthread-2.0" ], "value" )
-  include_dirs = pkgresult[0]
-  cflags = pkgresult[1]
-  libs = pkgresult[2]
-  lib_dirs = pkgresult[3]
-
-  defines = [ "TOOLKIT_GTK" ]
-}
-
-config("pangocairo") {
-  pkgresult = exec_script(pkg_script, [ "pangocairo" ], "value" )
-  include_dirs = pkgresult[0]
-  cflags = pkgresult[1]
-  libs = pkgresult[2]
-  lib_dirs = pkgresult[3]
-}
-
-config("udev") {
-  pkgresult = exec_script(pkg_script, [ "libudev" ], "value" )
-  include_dirs = pkgresult[0]
-  cflags = pkgresult[1]
-  libs = pkgresult[2]
-  lib_dirs = pkgresult[3]
-}
-
-config("x11") {
-  # Don't bother running pkg-config for these X related libraries since it just
-  # returns the same libs, and forking pkg-config is slow.
-  defines = [ "USE_X11" ]
-  libs = [
-    "X11",
-    "Xcomposite",
-    "Xcursor",
-    "Xdamage",
-    "Xext",
-    "Xfixes",
-    "Xi",
-    "Xrender",
-    "Xss",
-    "Xtst",
-  ]
-}