Revert "Reland change to enable deferred image decoding for animated GIFs" and rebaselines.

This reverts commit f270364ec689a471b2fb1307a006158d260eb45b and dcd6f7493c64721bc003a382ca0e2931b00de8fc.

Conflicts:
	LayoutTests/platform/win-xp/virtual/deferred/fast/images/webp-color-profile-lossy-expected.png

BUG=169377,259783
TBR=hclam,ojan

Review URL: https://codereview.chromium.org/19422003

git-svn-id: svn://svn.chromium.org/blink/trunk@154328 bbb929c8-8fbe-4397-9dbb-9b2b20218538