Blink style: Remove dependency from commputed_style.h to cc/paint/.

cc/paint/*.h are large. This CL reduces computed_style.h's
pre-processed size by 1.00MB.

This CL removes some #includes for:
 - image.h, depending on cc/paint/paint_*.h
 - paint_record.h, depending on cc/paint/paint_record.h
 - skia_utils.h, depending on image.h

Bug: 242216
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I20cf47aee982475fe1319d6a6cdddd0adff024d4
Reviewed-on: https://chromium-review.googlesource.com/1130569
Reviewed-by: Anders Ruud <andruud@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573648}
14 files changed