Disable warning in leveldb

third_party/leveldatabase/leveldatabase.gyp

Index: third_party/leveldatabase/leveldatabase.gyp
diff --git a/third_party/leveldatabase/leveldatabase.gyp b/third_party/leveldatabase/leveldatabase.gyp
index db59f778405e6a96d59c32cbebff312272f6671a..101df72151cc92e4dc0bbb344024f4704f831737 100644
--- a/third_party/leveldatabase/leveldatabase.gyp
+++ b/third_party/leveldatabase/leveldatabase.gyp
@@ -55,6 +55,13 @@
             'include_dirs': [
               'src/port/win',
             ],
+            # Patch posted for upstream, can be removed once that's landed and
+            # rolled into Chromium.
+            # Internal link: https://mondrian.corp.google.com/#review/29997992

[Nico, 2012/05/17 17:24:45]

nit: to not leak .corp links, the usual approach is to create a go/ link and
then say http://go/bla here

+            'msvs_disabled_warnings': [
+              # Signed/unsigned comparison.
+              4018,
+            ],
           }],
         ],
       },