Add tool to help analyze binary size

tools/binary_size/binary_size.gyp

Index: tools/binary_size/binary_size.gyp
diff --git a/tools/binary_size/binary_size.gyp b/tools/binary_size/binary_size.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..ae3ab4416bd7f5edfb0aeb2381eab3e7f08dfd2e
--- /dev/null
+++ b/tools/binary_size/binary_size.gyp
@@ -0,0 +1,16 @@
+# 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': [
+    {
+      'target_name': 'binary_size_java',
+      'type': 'none',
+      'variables': {
+        'java_in_dir': 'java',
+      },
+      'includes': [ '../../build/java.gypi' ],
+    },
+  ],
+}