add system libXNVCtrl library support in linux unbundle

originally developed here:
https://github.com/pld-linux/chromium-browser/commits/ea209591465e59e433cbb231270088a3d45658a2/system-libxnvctrl.patch

reviewed by phajdan.jr in private mail exchange

R=phajdan.jr@chromium.org
BUG=

Review URL: https://codereview.chromium.org/120533002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250495 0039d316-1c4b-4281-b951-d872f2087c98

AUTHORS

@@ -84,6 +84,7 @@ Dongwoo Joshua Im <dw.im@samsung.com>
 Douglas F. Turner <doug.turner@gmail.com>
 Edward Crossman <tedoc2000@gmail.com>
 Ehsan Akhgari <ehsan.akhgari@gmail.com>
+Elan Ruusamäe <elan.ruusamae@gmail.com>
 Eric Rescorla <ekr@rtfm.com>
 Erik Hill <erikghill@gmail.com>
 Erik Sjölund <erik.sjolund@gmail.com>

build/linux/unbundle/libXNVCtrl.gyp

@@ -0,0 +1,35 @@
+# 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': 'libXNVCtrl',
+      'type': 'none',
+      'variables': {
+        'headers_root_path': '.',
+        'header_filenames': [
+          'NVCtrlLib.h',
+          'NVCtrl.h',
+        ],
+      },
+      'includes': [
+        '../../build/shim_headers.gypi',
+      ],
+      'direct_dependent_settings': {
+        'cflags': [
+            '<!@(pkg-config --cflags libXNVCtrl)',
+        ],
+      },
+      'link_settings': {
+        'ldflags': [
+          '<!@(pkg-config --libs-only-L --libs-only-other libXNVCtrl)',
+        ],
+        'libraries': [
+          '<!@(pkg-config --libs-only-l libXNVCtrl)',
+        ],
+      },
+    }
+  ],
+}

build/linux/unbundle/replace_gyp_files.py

@@ -29,6 +29,7 @@
   'use_system_libvpx': 'third_party/libvpx/libvpx.gyp',
   'use_system_libwebp': 'third_party/libwebp/libwebp.gyp',
   'use_system_libxml': 'third_party/libxml/libxml.gyp',
+  'use_system_libxnvctrl' : 'third_party/libXNVCtrl/libXNVCtrl.gyp',
   'use_system_libxslt': 'third_party/libxslt/libxslt.gyp',
   'use_system_openssl': 'third_party/openssl/openssl.gyp',
   'use_system_opus': 'third_party/opus/opus.gyp',