Exclude vulcanize-generated HTML/JS from PRESUBMIT.py checks

These files are automatically generated for the PDF extension. The long term
solution is not to check in vulcanize-generated files. These files may not
be needed once HTMLImports are fully implemented in chrome.

BUG=303491
R=arv@chromium.org, maruel@chromium.org

Review URL: https://codereview.chromium.org/154223003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251890 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251890
Always call into the embedder for password autofill auth if password uses it.

This will allow the embedder to change the autofill authentication based on
whether the functionality is available but has been turned off.

BUG=341492
R=gcasto@chromium.org, isherman@chromium.org

Review URL: https://codereview.chromium.org/170783005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251892 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251892