Second try at getting rid of scrollbars from effect-reference-zoom* tests: use 50% zoom instead of 140%.

TBR=sugoi@chromium.org
BUG=231504

Review URL: https://codereview.chromium.org/18654002

git-svn-id: svn://svn.chromium.org/blink/trunk@153518 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix typo in comment spotted by eseidel

TBR=eseidel
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/18653003

git-svn-id: svn://svn.chromium.org/blink/trunk@153519 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove dead code for computing fixable test counts.

In addition to being dead, it's throwing a stacktrace since adding
the NeedsRebaseline keyword since that value isn't in the FAILURE_TO_CHAR map.

TBR=dpranke@chromium.org

Review URL: https://codereview.chromium.org/18501009

git-svn-id: svn://svn.chromium.org/blink/trunk@153520 bbb929c8-8fbe-4397-9dbb-9b2b20218538