Create a standalone pdfium build.

samples/samples.gyp

Index: samples/samples.gyp
diff --git a/samples/samples.gyp b/samples/samples.gyp
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index 0000000000000000000000000000000000000000..f7b7237d8fd3cd72cc5dd764ad66775ffee459c4
--- /dev/null
+++ b/samples/samples.gyp
@@ -0,0 +1,21 @@
+# Copyright 2014 PDFium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'target_defaults': {
+    'type': 'executable',
+    'dependencies': [
+      '../pdfium.gyp:fpdfsdk',
+    ],
+    'include_dirs': ['<(DEPTH)'],
+  },
+  'targets': [
+    {
+      'target_name': 'pdfium_test',
+      'sources': [
+        'pdfium_test.cc',
+      ],
+    },
+  ],
+}