Fix build breakage at r30320.

Fix warning: comparison between signed and unsigned integer expressions
in base/pickle.cc

TBR=thesig
BUG=none
TEST=build sucess

Review URL: http://codereview.chromium.org/342014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30321 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: da0b57915c3ae4a9f2cfe0c4c60d489ea8b8896a
1 file changed
tree: c2c78f676a9f4b61f92923e6e07e239dbe20b606
  1. base/
  2. build/
  3. ipc/
  4. testing/