Update leveldb to reuse-manifest/HEAD

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 124 matching lines @@
   'src/third_party/libexif/sources':
    Var('chromium_git') + '/chromium/deps/libexif/sources.git' + '@' + 'ed98343daabd7b4497f97fda972e132e6877c48a',
 
   'src/third_party/hunspell_dictionaries':
    Var('chromium_git') + '/chromium/deps/hunspell_dictionaries.git' + '@' + 'c106afdcec5d3de2622e19f1b3294c47bbd8bd72',
 
   'src/third_party/safe_browsing/testing':
     Var('chromium_git') + '/external/google-safe-browsing/testing.git' + '@' + '9d7e8064f3ca2e45891470c9b5b1dce54af6a9d6',
 
   'src/third_party/leveldatabase/src':
-    Var('chromium_git') + '/external/leveldb.git' + '@' + '40c17c0b84ac0b791fb434096fd5c05f3819ad55',
+    Var('chromium_git') + '/external/leveldb.git' + '@' + '1a9648e1f55be762042263df5dc7cb6388702e25',
 
   'src/third_party/snappy/src':
     Var('chromium_git') + '/external/snappy.git' + '@' + '762bb32f0c9d2f31ba4958c7c0933d22e80c20bf',
 
   'src/tools/grit':
     Var('chromium_git') + '/external/grit-i18n.git' + '@' + '4983981a20ff2f1c68a91994cff1eded5b2c494d', # from svn revision 200
 
   'src/tools/gyp':
     Var('chromium_git') + '/external/gyp.git' + '@' + '01528c7244837168a1c80f06ff60fa5a9793c824',
 
@@ skipping 651 matching lines @@
     'pattern': '.',
     'action': [
         'python',
         'src/tools/check_git_config.py',
         '--running-as-hook',
     ],
   },
 ]