some size_t -> uint32/ulong to match windows api for x64

(I looked at changing size_t to unsigned int elsewhere, but then the interactions with std::vector get messier then).

R=cpu@chromium.org
BUG=166496

Review URL: https://chromiumcodereview.appspot.com/11876033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@177790 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed