Add glib to system.gyp for cros static library (load.cc)

An upcoming libcros change adds a header dependency on glib, so we need an entry in system.gyp for cros_api.gyp to reference.

BUG=chromium-os:19576
TEST=none

Review URL: http://codereview.chromium.org/7799001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98668 0039d316-1c4b-4281-b951-d872f2087c98

build/linux/system.gyp

@@ -425,6 +425,23 @@
         ],
       },
     },
+    {
+      'target_name': 'glib',
+      'type': 'settings',
+      'direct_dependent_settings': {
+        'cflags': [
+          '<!@(<(pkg-config) --cflags glib-2.0)',
+        ],
+      },
+      'link_settings': {
+        'ldflags': [
+          '<!@(<(pkg-config) --libs-only-L --libs-only-other glib-2.0)',
+        ],
+        'libraries': [
+          '<!@(<(pkg-config) --libs-only-l glib-2.0)',
+        ],
+      },
+    },
     {
       'target_name': 'libresolv',
       'type': 'settings',