Implement CSS3TextDecorations runtime flag in favor of CSS3_TEXT

LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-color.html

Index: LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-color.html
diff --git a/LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-color.html b/LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-color.html
index d02bdd74493d1c06a7763f830cc6fb06dea755bb..40af29c9e492eda8ad5c83c94ac9cab9e89a4c3f 100644
--- a/LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-color.html
+++ b/LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-color.html
@@ -14,15 +14,15 @@
             }
             #blue-underline {
                 text-decoration: underline;
-                -webkit-text-decoration-color: blue;
+                text-decoration-color: blue;
             }
             #gray-overline {
                 text-decoration: overline;
-                -webkit-text-decoration-color: gray;
+                text-decoration-color: gray;
             }
             #green-line-through {
                 text-decoration: line-through;
-                -webkit-text-decoration-color: green;
+                text-decoration-color: green;
             }
             #transparent-fill {
                 -webkit-text-fill-color: transparent;
@@ -35,9 +35,9 @@
         <h3>Each line of this test should match its text decoration color description:</h3>
 
         <!-- Valid values for underline, overline and line-through text decoration lines -->
-        <div class="underline" style="color: gray; -webkit-text-decoration-color: blue;">Gray text with blue underline</div><br/>
-        <div class="overline" style="color: green; -webkit-text-decoration-color: black;">Green text with black overline</div><br/>
-        <div class="line-through" style="-webkit-text-decoration-color: gold;">Black text with gold line-through</div><br/>
+        <div class="underline" style="color: gray; text-decoration-color: blue;">Gray text with blue underline</div><br/>
+        <div class="overline" style="color: green; text-decoration-color: black;">Green text with black overline</div><br/>
+        <div class="line-through" style="text-decoration-color: gold;">Black text with gold line-through</div><br/>
 
         <!-- Mix of underline, overline and line-through with different colors for each -->
         <div>
@@ -57,6 +57,6 @@
         </div><br/>
 
         <!-- Test with text-fill-color and text-stroke-color values set -->
-        <div class="underline" id="transparent-fill" style="-webkit-text-decoration-color: green;">Transparent fill with black stroke text and green underline</div><br/>
+        <div class="underline" id="transparent-fill" style="text-decoration-color: green;">Transparent fill with black stroke text and green underline</div><br/>
     </body>
 </html>