DevTools: Add support for //# sourceURL (sourceMappingURL) comments and deprecate //@ ones

LayoutTests/inspector/debugger/source-url-comment.html

Index: LayoutTests/inspector/debugger/source-url-comment.html
diff --git a/LayoutTests/inspector/debugger/source-url-comment.html b/LayoutTests/inspector/debugger/source-url-comment.html
index 70bfcb223ec991d23f648af31cadfe18a42d5b0b..465eb1f3e65a4df14eaf1577f31d70e0d1844040 100644
--- a/LayoutTests/inspector/debugger/source-url-comment.html
+++ b/LayoutTests/inspector/debugger/source-url-comment.html
@@ -5,23 +5,23 @@
 <script>
 function keepAliveInInlineScript() { }
 
-//@ sourceURL=inlineScriptURL.js
+//# sourceURL=inlineScriptURL.js
 </script>
 <script>
 function doEval()
 {
-    eval("function keepAlive() {}\n//@ sourceURL=evalURL.js");
+    eval("function keepAlive() {}\n//# sourceURL=evalURL.js");
 }
 
 function doEvalWithNonRelativeURL()
 {
-    eval("function relativeURLScript() {}\n//@ sourceURL=/js/nonRelativeURL.js");
+    eval("function relativeURLScript() {}\n//# sourceURL=/js/nonRelativeURL.js");
 }
 
 function doDynamicScript()
 {
     var scriptElement = document.createElement("script");
-    scriptElement.textContent = "function keepAliveInDynamicScript() {}\n//@ sourceURL=dynamicScriptURL.js";
+    scriptElement.textContent = "function keepAliveInDynamicScript() {}\n//# sourceURL=dynamicScriptURL.js";
     document.body.appendChild(scriptElement);
 }