Partial rebaseline for http://crrev.com/16402019 patch set 12.

Partial rebaseline for http://crrev.com/16402019 patch set 12.

This is still missing some results, but shows what baseline changes are required.

In particular, I expect the following additional baselines to be needed:

platform/win/fast/forms/placeholder-position-expected.png
platform/mac-lion/editing/selection/select-across-readonly-input-3-expected.png
platform/mac-lion/fast/forms/placeholder-position-expected.png
platform/mac-snowleopard/editing/selection/select-across-readonly-input-3-expected.png
platform/mac-snowleopard/fast/forms/placeholder-position-expected.png

However, the changes in these will be available to the rebaseline bot, and should be analogous to the changes seen in the baselines in this issue.

BUG=