Support unit-less lengths for white-list of properties only.

LayoutTests/TestExpectations

 crbug.com/443780 virtual/slimmingpaint/fast/events/option-tab.html [ Failure ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/panScroll-click-hyperlink.html [ Failure ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/scale-and-scroll-iframe-body.html [ ImageOnlyFailure ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/scale-and-scroll-iframe-window.html [ ImageOnlyFailure ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/touch/compositor-touch-hit-rects-scroll.html [ Failure ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/panScroll-in-iframe.html [ Timeout ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/panScroll-click.html [ Timeout ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/panScroll-event-fired.html [ Timeout ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/panScroll-nested-divs.html [ Timeout ]
 crbug.com/443780 virtual/slimmingpaint/fast/events/panScroll-drag.html [ Timeout ]
@@ skipping 337 matching lines @@
 crbug.com/225184 scrollingcoordinator/non-fast-scrollable-region-scaled-iframe.html [ ImageOnlyFailure Failure Pass ]
 
 crbug.com/365340 editing/pasteboard/paste-noscript-xhtml.xhtml [ Failure Pass ]
 
 crbug.com/237270 [ Win ] http/tests/history/replacestate-post-to-get-2.html [ Pass Timeout ]
 crbug.com/237270 [ Win ] http/tests/history/replacestate-post-to-get.html [ Pass Timeout ]
 crbug.com/316147 [ Win ] http/tests/history/back-to-post.html [ Failure Pass ]
 
 crbug.com/341435 http/tests/images/image-with-origin-header.html [ Pass Timeout ]
 
+crbug.com/436145 animations/keyframe-multiple-timing-functions-transform.html [ NeedsRebaseline ]

[Timothy Loh, 2015/01/06 23:21:00]

What needs to be rebaselined here?

[rune, 2015/01/07 08:40:37]

The integer 1 in this short-hand in the test were interpreted as a unitless
delay of 1ms:

"horizontal 2s linear 1 alternate"

I assumed the intention of the test was to use 1 as the
animation-iteration-count, so instead of adding "ms", I wanted to do a
rebaseline. The rebaseline is necessary because the removed 1ms animation-delay
causes a rendering difference.

+
 crbug.com/248938 virtual/threaded/animations/3d/transform-origin-vs-functions.html [ Pass Failure ]
 crbug.com/248938 [ Linux Win ] virtual/threaded/animations/animation-border-overflow.html [ Pass Timeout ]
 crbug.com/248938 virtual/threaded/animations/animation-direction-normal.html [ Pass ImageOnlyFailure Timeout ]
 crbug.com/248938 virtual/threaded/animations/animation-iteration-event-destroy-renderer.html [ Pass Timeout ]
 crbug.com/248938 [ Linux Win ] virtual/threaded/animations/animation-offscreen-to-onscreen.html [ Pass Timeout ]
 crbug.com/248938 virtual/threaded/animations/cascade-important.html [ Pass Timeout ]
 crbug.com/248938 virtual/threaded/animations/change-keyframes-name.html [ Pass Failure Timeout ]
 crbug.com/248938 virtual/threaded/animations/change-one-anim.html [ Pass Failure ]
 crbug.com/248938 [ Win ] virtual/threaded/animations/change-transform-style-during-animation.html [ Pass Timeout ]
 crbug.com/248938 [ Win Debug ] virtual/threaded/animations/combo-transform-rotate+scale.html [ Pass Timeout ]
@@ skipping 1167 matching lines @@
 crbug.com/442340 webexposed/global-interface-listing-dedicated-worker.html [ NeedsManualRebaseline ]
 crbug.com/442340 virtual/stable/webexposed/global-interface-listing-shared-worker.html [ NeedsManualRebaseline ]
 
 crbug.com/390488 [ Mac Debug ] svg/custom/foreign-object-skew.svg [ ImageOnlyFailure ]
 
 crbug.com/445097 inspector-protocol/timeline/timeline-dispatchEvent.html [ Pass Failure ]
 
 crbug.com/445889 virtual/slimmingpaint/fast/inline/fixed-pos-moves-with-abspos-inline-parent.html [ Pass Failure ]
 crbug.com/445889 fast/inline/fixed-pos-moves-with-abspos-inline-parent.html [ Pass Failure ]
 crbug.com/445955 [ Mac ] web-animations-api/player-cancel-finishes.html [ Pass Failure ]