Update leveldb to reuse-manifest/HEAD

third_party/leveldatabase/README.chromium

Index: third_party/leveldatabase/README.chromium
diff --git a/third_party/leveldatabase/README.chromium b/third_party/leveldatabase/README.chromium
index fcd75552eab3cb2c89e6e50a4c4b39d9f85c1fdf..51c0afc1bdc1ab2b5a1bb61e694a48d921db645c 100644
--- a/third_party/leveldatabase/README.chromium
+++ b/third_party/leveldatabase/README.chromium
@@ -1,7 +1,7 @@
 Name: LevelDB: A Fast Persistent Key-Value Store
 Short Name: leveldb
 URL: https://github.com/google/leveldb.git
-Version: r80
+Version: unknown
 License: New BSD
 License File: src/LICENSE
 Security Critical: yes
@@ -10,6 +10,10 @@ Description:
 Alternative to SQLite used as the backend for IndexedDB and internally by the
 FileSystem API implementation and others.
 
+Currently using the reuse-manifest branch to get leveldb's (not yet released)
+manifest reuse feature. Intend to switch to official release (or master branch)
+once leveldb puts this feature into master.
+
 Local Additions:
 * gyp file for building in chromium
 * port/port_chromium.{h,cc} and env_chromium.{h,cc} provide chromium