Rebaseline virtual/fasttextautosizing/fast/text-autosizing/hackernews-comments.html for XP

The auto-rebaseline bot missed XP in Blink r164979, so
rebaseline manually.

BUG=none
R=pdr@chromium.org
TBR=pdr@chromium.org

Review URL: https://codereview.chromium.org/137273004

git-svn-id: svn://svn.chromium.org/blink/trunk@165011 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Make marking a reftests as NeedsRebaseline/NeedsManualRebaseline a lint error.

There's no way to rebaseline reftests. So, error on the linter instead of
after people have committed the patch and the auto-rebaseline runs.

Review URL: https://codereview.chromium.org/134663004

git-svn-id: svn://svn.chromium.org/blink/trunk@165013 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[FastTextAutosizer] Incorporate accessibility and device scale factors

This patch incorporates the accessibility font scale factor and the
device scale adjustment into the multiplier calculation. For performance,
these scale factors are only accessed in prepareRenderViewInfo. In
addition, a debug-only assert has been added to ensure
prepareRenderViewInfo is called before the multiplier is calculated.

With this patch we pass 1 additional test!

BUG=333124
R=skobes
NOTRY=true

Review URL: https://codereview.chromium.org/135733002

git-svn-id: svn://svn.chromium.org/blink/trunk@165014 bbb929c8-8fbe-4397-9dbb-9b2b20218538