GitLab

The main one is coputing the Aho-Corasick tree size in advance.

Also contained are code clean-ups and minor optimisations, like removing HasEdge/GetEdge sequences, or adding const to aid compiler optimisations.

This was tested on a benchmark adding 20k+ patterns. It showed a reduction of the running time by 30%.

BUG=236368

Review URL: https://chromiumcodereview.appspot.com/14780003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@198803 0039d316-1c4b-4281-b951-d872f2087c98