Refactor the code distributing width to columns in auto layout tables.

LayoutTests/TestExpectations

 # turn off Slimming Paint tests for all non-Linux platforms...
 crbug.com/453972 [ Mac ] virtual/slimmingpaint/ [ Skip ]
 crbug.com/453972 [ Win ] virtual/slimmingpaint/ [ Skip ]
 crbug.com/453972 [ Android ] virtual/slimmingpaint/ [ Skip ]
 # except for fast/block/, as a sanity test directory.
 crbug.com/453972 [ Mac ] virtual/slimmingpaint/fast/block [ Pass ]
 crbug.com/453972 [ Win ] virtual/slimmingpaint/fast/block [ Pass ]
 crbug.com/453972 [ Android ] virtual/slimmingpaint/fast/block [ Pass ]
 
 crbug.com/474117 compositing/overflow/overflow-positioning.html [ ImageOnlyFailure Pass ]
@@ skipping 185 matching lines @@
 crbug.com/449242 virtual/slimmingpaint/fast/css/word-spacing-characters-complex-text.html [ Pass ImageOnlyFailure Crash ]
 
 crbug.com/438589 fast/repaint/obscured-background-no-repaint.html [ Failure Pass ]
 crbug.com/438589 virtual/slimmingpaint/fast/repaint/obscured-background-no-repaint.html [ Failure Pass ]
 
 # Crashing after V8 roll to 3.28.43.1.
 crbug.com/398306 fast/events/before-unload-return-bad-value.html [ Crash Timeout Pass ]
 
 crbug.com/234069 [ Mac Release ] fast/events/touch/gesture/long-press-drag-drop-touch-editing-combined.html [ Failure Pass ]
 
+crbug.com/476370 [ Mac Win ] fast/table/fixed-widths-exceed-available.html [ NeedsRebaseline ]

[mstensho (USE GERRIT), 2015/05/04 20:42:48]

Why this? Aren't your tests going to pass on all platforms?

[mstensho (USE GERRIT), 2015/05/12 08:50:27]

So this means that there'll be FAIL in the expectation files on Windows and Mac?
Doesn't sound good.

+crbug.com/476370 [ Mac Win ] fast/table/percent-widths-float.html [ NeedsRebaseline ]
+crbug.com/476370 [ Mac Win ] fast/table/percent-widths-total-less-than-zero.html [ NeedsRebaseline ]
+
 crbug.com/330083 imported/web-platform-tests/shadow-dom/elements-and-dom-objects/extensions-to-element-interface/methods/elements-001.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/elements-and-dom-objects/extensions-to-element-interface/methods/non-element-nodes-001.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/elements-and-dom-objects/shadowroot-object/shadowroot-methods/test-004.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/events/event-dispatch/test-001.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/events/event-dispatch/test-003.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/events/event-retargeting/test-004.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/events/retargeting-relatedtarget/test-003.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/html-elements-and-their-shadow-trees/test-001.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/html-elements-and-their-shadow-trees/test-002.html [ Failure ]
 crbug.com/330083 imported/web-platform-tests/shadow-dom/html-elements-and-their-shadow-trees/test-003.html [ Failure ]
@@ skipping 1859 matching lines @@
 
 crbug.com/479181 inspector-protocol/animation/animation-multiple-frames.html [ Pass Failure ]
 
 crbug.com/479202 fast/forms/select/select-typeahead-with-spacekey.html [ Pass Failure ]
 crbug.com/479202 virtual/slimmingpaint/fast/forms/select/select-typeahead-with-spacekey.html [ Pass Failure ]
 
 crbug.com/480652 fast/events/window-onerror-04.html [ NeedsManualRebaseline ]
 crbug.com/480652 svg/dom/SVGViewSpec.html [ NeedsManualRebaseline ]
 crbug.com/480652 virtual/pointerevent/fast/events/window-onerror-04.html [ NeedsManualRebaseline ]
 crbug.com/480652 virtual/slimmingpaint/fast/events/window-onerror-04.html [ NeedsManualRebaseline ]