Componentize FaviconService and FaviconHandler

Move FaviconService and FaviconHandler into //components/favicon/core/browser
as they have no problematic dependencies anymore.

Update DEPS and dependencies of favicon component.

BUG=359514,359513

Review URL: https://codereview.chromium.org/983043003

Cr-Commit-Position: refs/heads/master@{#320738}
50 files changed