[css3-text] Implement text-decoration property shorthand

LayoutTests/fast/css3-text/css3-text-decoration/getComputedStyle/getComputedStyle-text-decoration-shorthand-expected.txt

Index: LayoutTests/fast/css3-text/css3-text-decoration/getComputedStyle/getComputedStyle-text-decoration-shorthand-expected.txt
diff --git a/LayoutTests/fast/css3-text/css3-text-decoration/getComputedStyle/getComputedStyle-text-decoration-shorthand-expected.txt b/LayoutTests/fast/css3-text/css3-text-decoration/getComputedStyle/getComputedStyle-text-decoration-shorthand-expected.txt
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+Test to make sure text-decoration property is backwards compatible with CSS 2.1 and CSS 3 shorthand.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Initial values:
+PASS e.style.getPropertyCSSValue('text-decoration') is null
+PASS computedStyle.getPropertyCSSValue('text-decoration').cssText is 'none solid rgb(0, 0, 0)'
+PASS checkComputedStyleValue() is true
+
+CSS2.1 backwards compatibility ("text-decoration: underline overline line-through blink;"):
+PASS e.style.getPropertyCSSValue('text-decoration-line').cssText is 'underline overline line-through blink'
+PASS computedStyle.getPropertyCSSValue('text-decoration-line').cssText is 'underline overline line-through'
+PASS computedStyle.getPropertyCSSValue('text-decoration').cssText is 'underline overline line-through solid rgb(0, 0, 0)'
+PASS checkComputedStyleValue() is true
+
+CSS3 Shorthand ("text-decoration: underline overline line-through blink dashed red;"):
+PASS computedStyle.getPropertyCSSValue('text-decoration').cssText is 'underline overline line-through dashed rgb(255, 0, 0)'
+PASS computedStyle.getPropertyCSSValue('text-decoration-line').cssText is 'underline overline line-through'
+PASS computedStyle.getPropertyCSSValue('text-decoration-style').cssText is 'dashed'
+PASS computedStyle.getPropertyCSSValue('text-decoration-color').cssText is 'rgb(255, 0, 0)'
+PASS checkComputedStyleValue() is true
+
+Omitting text decoration line resets to its initial value "none" ("text-decoration: navy dotted;"):
+PASS computedStyle.getPropertyCSSValue('text-decoration').cssText is 'none dotted rgb(0, 0, 128)'
+PASS computedStyle.getPropertyCSSValue('text-decoration-line').cssText is 'none'
+PASS computedStyle.getPropertyCSSValue('text-decoration-style').cssText is 'dotted'
+PASS computedStyle.getPropertyCSSValue('text-decoration-color').cssText is 'rgb(0, 0, 128)'
+PASS checkComputedStyleValue() is true
+
+PASS successfullyParsed is true
+
+TEST COMPLETE
+