GitLab

PhishingDOMFeatureExtractor iterates over the page elements and computes a
number of features.  To avoid blocking the renderer for too long, the extractor
may run in several chunks of works, posting a task to continue processing if
necessary.

This CL only includes the feature extraction itself.  I will add the logic to
cap the time per iteration in a follow-up CL.

BUG=none
TEST=PhishingDOMFeatureExtractorTest

Review URL: http://codereview.chromium.org/2878046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54082 0039d316-1c4b-4281-b951-d872f2087c98