Add fontconfig to linux DEPS for embedded builds (reland)

We'll use this in-tree fontconfig when "embedded=1" is set in GYP_DEFINES.

This was reverted pending license checker changes (landed as r127213003).

Relanding with the following changes from the third_party HOWTO:
  - Added OWNERS file
  - Updated .gitignore

BUG=318315

Review URL: https://codereview.chromium.org/133903005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244318 0039d316-1c4b-4281-b951-d872f2087c98

.gitignore

@@ -209,6 +209,7 @@ v8.log
 /third_party/ffmpeg
 /third_party/findbugs
 /third_party/flac
+/third_party/fontconfig/src
 /third_party/freetype
 /third_party/freetype2/src
 /third_party/gles2_conform

DEPS

@@ -495,6 +495,10 @@ deps_os = {
       Var("chromium_git") +
       "/external/liblouis.git@3c2daee56250162e5a75830871601d74328d39f5",
 
+    # Used for embedded builds. CrOS & Linux use the system version.
+    "src/third_party/fontconfig/src":
+      Var("chromium_git") + "/external/fontconfig.git" +
+      "@4f944971dac3c0bbc6fdd3bf3123e3c8378a3acb",
   },
   "android": {
     "src/third_party/android_tools":

third_party/fontconfig/OWNERS

@@ -0,0 +1,3 @@
+spang@chromium.org
+rjkroege@chromium.org
+spang@chromium.org

third_party/fontconfig/README.chromium

@@ -0,0 +1,20 @@
+Name: fontconfig
+URL: http://www.freedesktop.org/wiki/Software/fontconfig/
+Version: 2.11.0
+License: MIT
+License File: src/COPYING
+Security Critical: yes
+
+Description:
+Fontconfig is a library for configuring and customizing font access.
+
+Modifications:
+- None
+
+To import a new snapshot of fontconfig:
+- Checkout the latest release tag: git checkout 2.11.0
+- Change the DEPS entry to the newly checked out commit.
+- Update generated files:
+    ./autogen.sh --enable-libxml2 && make
+    rsync -R $(git ls-files --others '*.h' '*/*.h') ../include
+- Update this README to reflect the new version number.

third_party/fontconfig/fontconfig.gyp

@@ -0,0 +1,62 @@
+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'fontconfig',
+      'type': '<(component)',
+      'dependencies' : [
+        '../zlib/zlib.gyp:zlib',
+        '../../build/linux/system.gyp:freetype2',
+        '../libxml/libxml.gyp:libxml',
+      ],
+      'defines': [
+          'HAVE_CONFIG_H',
+          'FC_CACHEDIR="/var/cache/fontconfig"',
+          'FONTCONFIG_PATH="/etc/fonts"',
+      ],
+      'sources': [
+        'src/src/fcarch.h',
+        'src/src/fcatomic.c',
+        'src/src/fcblanks.c',
+        'src/src/fccache.c',
+        'src/src/fccfg.c',
+        'src/src/fccharset.c',
+        'src/src/fccompat.c',
+        'src/src/fcdbg.c',
+        'src/src/fcdefault.c',
+        'src/src/fcdir.c',
+        'src/src/fcformat.c',
+        'src/src/fcfreetype.c',
+        'src/src/fcfs.c',
+        'src/src/fchash.c',
+        'src/src/fcinit.c',
+        'src/src/fclang.c',
+        'src/src/fclist.c',
+        'src/src/fcmatch.c',
+        'src/src/fcmatrix.c',
+        'src/src/fcname.c',
+        'src/src/fcobjs.c',
+        'src/src/fcpat.c',
+        'src/src/fcserialize.c',
+        'src/src/fcstat.c',
+        'src/src/fcstr.c',
+        'src/src/fcxml.c',
+        'src/src/ftglue.h',
+        'src/src/ftglue.c',
+      ],
+      'include_dirs': [
+        'src',
+        'include',
+        'include/src',
+      ],
+      'direct_dependent_settings': {
+        'include_dirs': [
+           'src',
+        ],
+      },
+    },
+  ],
+}