Add Chrome OS's minigbm library to third_party

third_party/minigbm/minigbm.gyp

+# Copyright 2015 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.
+
+{
+  'variables': {
+    'use_system_minigbm%': 0,
+  },
+  'conditions': [
+    ['use_system_minigbm==0', {
+      'targets': [
+        {
+          'target_name': 'minigbm',
+          'type': 'static_library',
+          'dependencies' : [
+            '../../build/linux/system.gyp:libdrm',
+          ],
+          'sources': [
+            'src/cirrus.c',
+            'src/exynos.c',
+            'src/gbm.c',
+            'src/gma500.c',
+            'src/helpers.c',
+            'src/i915.c',
+            'src/mediatek.c',
+            'src/rockchip.c',
+            'src/tegra.c',
+            'src/udl.c',
+          ],
+          'include_dirs': [
+            'src',
+          ],
+          'direct_dependent_settings': {
+            'include_dirs': [
+               'src',
+            ],
+          },
+        },
+      ],
+    }, { # 'use_system_minigbm!=0
+      'targets': [
+        {
+          'target_name': 'minigbm',
+          'type': 'none',
+          'direct_dependent_settings': {
+            'cflags': [
+              '<!@(<(pkg-config) --cflags gbm)',
+            ],
+          },
+          'link_settings': {
+            'ldflags': [
+              '<!@(<(pkg-config) --libs-only-L --libs-only-other gbm)',
+            ],
+            'libraries': [
+              '<!@(<(pkg-config) --libs-only-l gbm)',
+            ],
+          },
+        },
+      ],
+    }],
+  ],
+}