Update libyuv to r1602 version to get best performance.

Bug: 29870647

Change-Id: I8ec9fab7f55765fa33ebe7ba1c7ad2147f418de2
diff --git a/files/libyuv_nacl.gyp b/files/libyuv_nacl.gyp
new file mode 100644
index 0000000..b8fe57e
--- /dev/null
+++ b/files/libyuv_nacl.gyp
@@ -0,0 +1,37 @@
+# Copyright 2014 The LibYuv Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS. All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+{
+  'includes': [
+    'libyuv.gypi',
+    '../../native_client/build/untrusted.gypi',
+  ],
+  'targets': [
+    {
+      'target_name': 'libyuv_nacl',
+      'type': 'none',
+      'variables': {
+        'nlib_target': 'libyuv_nacl.a',
+        'build_glibc': 0,
+        'build_newlib': 0,
+        'build_pnacl_newlib': 1,
+      },
+      'include_dirs': [
+        'include',
+      ],
+      'direct_dependent_settings': {
+        'include_dirs': [
+          'include',
+        ],
+      },
+      'sources': [
+        '<@(libyuv_sources)',
+      ],
+    },  # target libyuv_nacl
+  ]
+}