Remove display:compact as per https://groups.google.com/a/chromium.org/d/topic/blink-dev/j6QErzkX4R…

LayoutTests/fast/regions/script-tests/region-element-display-restriction.js

 description("Test that only non-replaced block elements can be transformed into regions.");
 
 function createRegionElement(elementType, displayType)
 {
     var element = document.createElement(elementType);
     var textElement = document.createTextNode("inside element");
     element.appendChild(textElement);
     element.style.setProperty("display", displayType);
     document.body.appendChild(element);
 
     // Transform the element into a region.
     element.style.setProperty("-webkit-flow-from", "no-flow");
 
     // The region element was created if the length of inner text is 0.
     var regionCreated = element.innerText.length == 0;
 
     document.body.removeChild(element);
 
     return regionCreated;
 }
 
 shouldBeFalse('createRegionElement("div", "none")');
 shouldBeTrue('createRegionElement("div", "block")');
 shouldBeTrue('createRegionElement("div", "inline-block")');
-shouldBeFalse('createRegionElement("div", "compact")');
 shouldBeFalse('createRegionElement("div", "inline")');
 shouldBeFalse('createRegionElement("div", "table")');
 shouldBeFalse('createRegionElement("div", "inline-table")');
 shouldBeTrue('createRegionElement("div", "table-cell")');
 shouldBeTrue('createRegionElement("div", "table-caption")');
 shouldBeTrue('createRegionElement("div", "list-item")');
 shouldBeFalse('createRegionElement("div", "-webkit-box")');
 shouldBeFalse('createRegionElement("div", "-webkit-inline-box")');
 shouldBeFalse('createRegionElement("div", "-webkit-flex")');
 shouldBeFalse('createRegionElement("div", "-webkit-inline-flex")');
 // FIXME: Also add grid and inline grid when it is enabled by default