Don't include trailing comments in javascript snippets.

Source/core/html/parser/XSSAuditor.cpp

Index: Source/core/html/parser/XSSAuditor.cpp
diff --git a/Source/core/html/parser/XSSAuditor.cpp b/Source/core/html/parser/XSSAuditor.cpp
index 05ae9cbafb937d7d06da5945cd787d34d91a3af9..65bc34b30b7bd31b31cf1755042187b1a7b9b864 100644
--- a/Source/core/html/parser/XSSAuditor.cpp
+++ b/Source/core/html/parser/XSSAuditor.cpp
@@ -696,12 +696,9 @@ String XSSAuditor::decodedSnippetForJavaScript(const FilterTokenRequest& request
         lastNonSpacePosition = kNotFound;
         for (foundPosition = startPosition; foundPosition < endPosition; foundPosition++) {
             if (!request.shouldAllowCDATA) {
-                if (startsSingleLineCommentAt(string, foundPosition) || startsMultiLineCommentAt(string, foundPosition)) {
-                    foundPosition += 2;
-                    break;
-                }
-                if (startsHTMLCommentAt(string, foundPosition)) {
-                    foundPosition += 4;
+                if (startsSingleLineCommentAt(string, foundPosition)
+                    || startsMultiLineCommentAt(string, foundPosition)
+                    || startsHTMLCommentAt(string, foundPosition)) {
                     break;
                 }
             }