Revert 275819 "Add libxslt to the GN build"

This is causing compile failure on the Android build:
http://build.chromium.org/p/chromium.linux/buildstatus?builder=Android%20GN&number=3401

> Add libxslt to the GN build
> 
> BUG=
> R=scottmg@chromium.org
> 
> Review URL: https://codereview.chromium.org/317253003

TBR=brettw@chromium.org

Review URL: https://codereview.chromium.org/320293003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275822 0039d316-1c4b-4281-b951-d872f2087c98

BUILD.gn

@@ -64,7 +64,6 @@ group("root") {
     "//third_party/libusb",
     "//third_party/libwebm",
     "//third_party/libwebp",
-    "//third_party/libxslt",
     "//third_party/libyuv",
     "//third_party/mesa",
     "//third_party/ots",

net/BUILD.gn

@@ -1086,11 +1086,10 @@ test("net_unittests") {
   }
 
   if (!use_nss_certs) {
-    sources -= [ "ssl/client_cert_store_nss_unittest.cc" ]
-    if (is_chromeos) {
-      # Will have already have been removed in the ChromeOS case.
-      sources -= [ "ssl/client_cert_store_chromeos_unittest.cc" ]
-    }
+    sources -= [
+      "ssl/client_cert_store_nss_unittest.cc",
+      "ssl/client_cert_store_chromeos_unittest.cc",
+    ]
   }
 
   if (use_openssl) {

third_party/libxslt/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.
-
-config("libxslt_config") {
-  defines = [ "LIBXSLT_STATIC" ]
-  include_dirs = [ "." ]
-}
-
-static_library("libxslt") {
-  sources = [
-    "libxslt/attributes.c",
-    "libxslt/attributes.h",
-    "libxslt/attrvt.c",
-    "libxslt/documents.c",
-    "libxslt/documents.h",
-    "libxslt/extensions.c",
-    "libxslt/extensions.h",
-    "libxslt/extra.c",
-    "libxslt/extra.h",
-    "libxslt/functions.c",
-    "libxslt/functions.h",
-    "libxslt/imports.c",
-    "libxslt/imports.h",
-    "libxslt/keys.c",
-    "libxslt/keys.h",
-    "libxslt/libxslt.h",
-    "libxslt/namespaces.c",
-    "libxslt/namespaces.h",
-    "libxslt/numbers.c",
-    "libxslt/numbersInternals.h",
-    "libxslt/pattern.c",
-    "libxslt/pattern.h",
-    "libxslt/preproc.c",
-    "libxslt/preproc.h",
-    "libxslt/security.c",
-    "libxslt/security.h",
-    "libxslt/templates.c",
-    "libxslt/templates.h",
-    "libxslt/transform.c",
-    "libxslt/transform.h",
-    "libxslt/trio.h",
-    "libxslt/triodef.h",
-    "libxslt/variables.c",
-    "libxslt/variables.h",
-    "libxslt/win32config.h",
-    "libxslt/xslt.c",
-    "libxslt/xslt.h",
-    "libxslt/xsltconfig.h",
-    "libxslt/xsltexports.h",
-    "libxslt/xsltInternals.h",
-    "libxslt/xsltlocale.c",
-    "libxslt/xsltlocale.h",
-    "libxslt/xsltutils.c",
-    "libxslt/xsltutils.h",
-    "libxslt/xsltwin32config.h",
-    "linux/config.h",
-    "mac/config.h",
-  ]
-
-  configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [ "//build/config/compiler:no_chromium_code" ]
-  direct_dependent_configs = [ ":libxslt_config" ]
-
-  if (is_linux) {
-    include_dirs = [ "linux" ]
-  } else if (is_win) {
-    include_dirs = [ "win32" ]
-  } else if (is_mac) {
-    include_dits = [ "mac" ]
-  }
-
-  if (is_clang) {
-    cflags = [ "-Wno-pointer-sign" ]
-  }
-
-  deps = [
-    "//third_party/libxml",
-  ]
-}