Files.app: Compile file_manager/foreground/js/metadata in v2 syntax.

third_party/closure_compiler/compile2.py

 #!/usr/bin/python
 # Copyright 2015 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.
 
 """Runs Closure compiler on JavaScript files to check for errors and produce
 minified output."""
 
 import argparse
 import os
@@ skipping 188 matching lines @@
       out_file: A file where the compiled output is written to.
       runner_args: Arguments passed to runner.jar.
       closure_args: Arguments passed directly to the Closure compiler.
       custom_sources: Whether |sources| was customized by the target (e.g. not
           in GYP dependency order).
 
     Returns:
       (found_errors, stderr) A boolean indicating whether errors were found and
           the raw Closure compiler stderr (as a string).
     """
-    is_extern = lambda f: 'extern' in f
+    is_extern = lambda f: 'externs' in f
     externs_and_deps = [self._POLYMER_EXTERNS]
 
     if custom_sources:
       externs_and_deps += sources
     else:
       self._target = sources[0]
       externs_and_deps += sources[1:]
 
     externs = filter(is_extern, externs_and_deps)
     deps = filter(lambda f: not is_extern(f), externs_and_deps)
@@ skipping 102 matching lines @@
 
   found_errors, stderr = checker.check(opts.sources, out_file=opts.out_file,
                                        closure_args=opts.closure_args,
                                        runner_args=opts.runner_args,
                                        custom_sources=opts.custom_sources)
 
   if found_errors:
     if opts.custom_sources:
       print stderr
     sys.exit(1)