Turn on verbose flag for compiling file_manager.

ui/file_manager/audio_player/js/compiled_resources.gyp

Index: ui/file_manager/audio_player/js/compiled_resources.gyp
diff --git a/ui/file_manager/audio_player/js/compiled_resources.gyp b/ui/file_manager/audio_player/js/compiled_resources.gyp
index 3817183714183a752f22490351a665c9201db5b2..eab485869d5cdf37bbf4b015d6c2c32bdb7425d2 100644
--- a/ui/file_manager/audio_player/js/compiled_resources.gyp
+++ b/ui/file_manager/audio_player/js/compiled_resources.gyp
@@ -40,9 +40,12 @@
           '../../externs/es6_workaround.js',
           '../../externs/platform.js',
         ],
+        'closure_args': [
+          'warning_level=VERBOSE',
+        ],

[Dan Beam, 2015/10/16 07:15:02]

please make 1 ui/file_manager/compile_js.gypi with these args and use it instead
of third_party/closure_compiler/compile_js.gypi

see remoting/compile_js.gypi for an example

[fukino, 2015/10/19 09:55:14]

I didn't know how to share the compile option. Thanks!
Done.

       },
       'includes': [
-        '../../../../third_party/closure_compiler/compile_js.gypi'
+        '../../../../third_party/closure_compiler/compile_js.gypi',
       ],
     },
     {
@@ -92,9 +95,12 @@
           '../../externs/files_elements.js',
           '../../externs/platform.js',
         ],
+        'closure_args': [
+          'warning_level=VERBOSE',
+        ],
       },
       'includes': [
-        '../../../../third_party/closure_compiler/compile_js.gypi'
+        '../../../../third_party/closure_compiler/compile_js.gypi',
       ],
     }
   ],