Remove CSSKeyframesRule.insertRule()

LayoutTests/http/tests/css/resources/shared-stylesheet-mutation.js

 var testCount = 17;
 var testDocuments = [];
 var testSheets = [];
 var expectedResults = [];
 
 function buildTestFrame(content)
 {
     var iframe = document.createElement("iframe");
     iframe.setAttribute("width", "100");
     iframe.setAttribute("height", "50");
@@ skipping 89 matching lines @@
         sheet.deleteRule(3);\
         sheet.deleteRule(1);\
         sheet.deleteRule(1);\
     ';
     mutationTest(11, testString, 'green');
 
     var importRule = '@import "data:text/css;charset=utf-8,%23testdiv%7Bbackground-color%3Agreen%20!important%7D";';
     mutationTest(12, "sheet.insertRule('"+importRule+"', 0)", 'green');
 
     mutationTest(13, 'sheet.cssRules[2].selectorText = "foo"', 'red');
-    mutationTest(14, 'sheet.cssRules[3].insertRule("40% { left: 40px; }")', 'red');
+    mutationTest(14, 'sheet.cssRules[3].appendRule("40% { left: 40px; }")', 'red');
     mutationTest(15, 'sheet.cssRules[3].deleteRule("100%")', 'red');
     mutationTest(16, 'sheet.cssRules[4].style.setProperty("font-family", "Bar", "")', 'red');
 
     setTimeout(finishedTests, 80);
 }
 
 function runTestsAfterLoadComplete(createCSSOMObjectBeforeTest)
 {
     var complete = true;
     for (var i = 0; i < testDocuments.length; ++i) {
         var sheet = testDocuments[i].styleSheets.length == 1 ? testDocuments[i].styleSheets[0] : null;
         if (sheet)
             testSheets[i] = sheet;
         else
             complete = false;
     }
     if (!complete) {
         setTimeout(runTestsAfterLoadComplete, 10);
         return;
     }
     executeTests(createCSSOMObjectBeforeTest);
 }
 
 function runTests(createCSSOMObjectBeforeTest)
 {
     buildTestFrames("<link rel=stylesheet href=resources/shared.css><div id=testdiv>Test</div>");
 
     runTestsAfterLoadComplete(createCSSOMObjectBeforeTest);
 }