Update from https://crrev.com/327068

third_party/junit/junit.gyp

Index: third_party/junit/junit.gyp
diff --git a/third_party/junit/junit.gyp b/third_party/junit/junit.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..c797e06a5eb4b4ad81f26a88a6d39640d49c3a5e
--- /dev/null
+++ b/third_party/junit/junit.gyp
@@ -0,0 +1,34 @@
+# 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': [
+    {
+      # GN: //third_party/junit:hamcrest
+      'target_name': 'hamcrest_jar',
+      'type': 'none',
+      'variables': {
+        'jar_path': 'src/lib/hamcrest-core-1.1.jar',
+      },
+      'includes': [
+        '../../build/host_prebuilt_jar.gypi',
+      ]
+    },
+    {
+      # GN: //third_party/junit:junit
+      'target_name': 'junit_jar',
+      'type': 'none',
+      'dependencies': [
+        'hamcrest_jar',
+      ],
+      'variables': {
+        'src_paths': [ 'src/src/main/java' ],
+      },
+      'includes': [
+        '../../build/host_jar.gypi',
+      ],
+    },
+  ],
+}
+