Core: Update tested jsdom, drop obsolete workarounds

The latest version supporting Node.js is 3.1.2; some workarounds are not needed
for this version. For example, in jsdom 3.1.2 a document created via
document.implementation.createHTMLDocument( "" ) has a body.

Fixes gh-2153
Closes gh-2154

1 files changed, 45 insertions, 49 deletions

diff --git a/src/css/support.js b/src/css/support.js
index 4dd22bd2a..fde735318 100644
--- a/src/css/support.js
+++ b/src/css/support.js
@@ -46,61 +46,57 @@ define([
 		documentElement.removeChild( container );
 	}
 
-	// Support: node.js jsdom
-	// Don't assume that getComputedStyle is a property of the global object
-	if ( window.getComputedStyle ) {
-		jQuery.extend( support, {
-			pixelPosition: function() {
-				// This test is executed only once but we still do memoizing
-				// since we can use the boxSizingReliable pre-computing.
-				// No need to check if the test was already performed, though.
+	jQuery.extend( support, {
+		pixelPosition: function() {
+			// This test is executed only once but we still do memoizing
+			// since we can use the boxSizingReliable pre-computing.
+			// No need to check if the test was already performed, though.
+			computeStyleTests();
+			return pixelPositionVal;
+		},
+		boxSizingReliable: function() {
+			if ( boxSizingReliableVal == null ) {
 				computeStyleTests();
-				return pixelPositionVal;
-			},
-			boxSizingReliable: function() {
-				if ( boxSizingReliableVal == null ) {
-					computeStyleTests();
-				}
-				return boxSizingReliableVal;
-			},
-			pixelMarginRight: function() {
-				// Support: Android 4.0-4.3
-				// We're checking for boxSizingReliableVal here instead of pixelMarginRightVal
-				// since that compresses better and they're computed together anyway.
-				if ( boxSizingReliableVal == null ) {
-					computeStyleTests();
-				}
-				return pixelMarginRightVal;
-			},
-			reliableMarginRight: function() {
+			}
+			return boxSizingReliableVal;
+		},
+		pixelMarginRight: function() {
+			// Support: Android 4.0-4.3
+			// We're checking for boxSizingReliableVal here instead of pixelMarginRightVal
+			// since that compresses better and they're computed together anyway.
+			if ( boxSizingReliableVal == null ) {
+				computeStyleTests();
+			}
+			return pixelMarginRightVal;
+		},
+		reliableMarginRight: function() {
 
-				// Support: Android 2.3
-				// Check if div with explicit width and no margin-right incorrectly
-				// gets computed margin-right based on width of container. (#3333)
-				// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
-				// This support function is only executed once so no memoizing is needed.
-				var ret,
-					marginDiv = div.appendChild( document.createElement( "div" ) );
+			// Support: Android 2.3
+			// Check if div with explicit width and no margin-right incorrectly
+			// gets computed margin-right based on width of container. (#3333)
+			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+			// This support function is only executed once so no memoizing is needed.
+			var ret,
+				marginDiv = div.appendChild( document.createElement( "div" ) );
 
-				// Reset CSS: box-sizing; display; margin; border; padding
-				marginDiv.style.cssText = div.style.cssText =
-					// Support: Android 2.3
-					// Vendor-prefix box-sizing
-					"-webkit-box-sizing:content-box;box-sizing:content-box;" +
-					"display:block;margin:0;border:0;padding:0";
-				marginDiv.style.marginRight = marginDiv.style.width = "0";
-				div.style.width = "1px";
-				documentElement.appendChild( container );
+			// Reset CSS: box-sizing; display; margin; border; padding
+			marginDiv.style.cssText = div.style.cssText =
+				// Support: Android 2.3
+				// Vendor-prefix box-sizing
+				"-webkit-box-sizing:content-box;box-sizing:content-box;" +
+				"display:block;margin:0;border:0;padding:0";
+			marginDiv.style.marginRight = marginDiv.style.width = "0";
+			div.style.width = "1px";
+			documentElement.appendChild( container );
 
-				ret = !parseFloat( window.getComputedStyle( marginDiv, null ).marginRight );
+			ret = !parseFloat( window.getComputedStyle( marginDiv, null ).marginRight );
 
-				documentElement.removeChild( container );
-				div.removeChild( marginDiv );
+			documentElement.removeChild( container );
+			div.removeChild( marginDiv );
 
-				return ret;
-			}
-		});
-	}
+			return ret;
+		}
+	});
 })();
 
 return support;