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

LayoutTests/inspector/styles/stylesheet-source-url-comment.html

Index: LayoutTests/inspector/styles/stylesheet-source-url-comment.html
diff --git a/LayoutTests/inspector/styles/stylesheet-source-url-comment.html b/LayoutTests/inspector/styles/stylesheet-source-url-comment.html
index 902242572e1176ba34c2a3e938590f936d1d47a5..bfa4aa3aec08b21774dc7eb276159284dcf5d0b0 100644
--- a/LayoutTests/inspector/styles/stylesheet-source-url-comment.html
+++ b/LayoutTests/inspector/styles/stylesheet-source-url-comment.html
@@ -7,20 +7,27 @@ body {
     color: green;
 }
 
-/*@ sourceURL=inlineStyleSheet.css */
+/*# sourceURL=inlineStyleSheet.css */
 </style>
 <script>
 function addInlineStyleSheet()
 {
     var styleElement = document.createElement("style");
-    styleElement.textContent = "body { color: black; }\n/*@ sourceURL=css/addedInlineStylesheet.css */";
+    styleElement.textContent = "body { color: black; }\n/*# sourceURL=css/addedInlineStylesheet.css */";
+    document.head.appendChild(styleElement);
+}
+
+function addInlineStyleSheetDeprecated()
+{
+    var styleElement = document.createElement("style");
+    styleElement.textContent = "body { color: black; }\n/*@ sourceURL=css/addedInlineStylesheetDeprecated.css */";
     document.head.appendChild(styleElement);
 }
 
 function addInlineStyleSheetNonRelative()
 {
     var styleElement = document.createElement("style");
-    styleElement.textContent = "body { color: red; }\n/*@ sourceURL=/css/nonRelativeInlineStylesheet.css */";
+    styleElement.textContent = "body { color: red; }\n/*# sourceURL=/css/nonRelativeInlineStylesheet.css */";
     document.head.appendChild(styleElement);
 }
 
@@ -70,6 +77,19 @@ function test()
             }
         },
 
+        function testDeprecatedSourceURLComment(next)
+        {
+            InspectorTest.showScriptSource("css/addedInlineStylesheetDeprecated.css", didShowSource);
+            InspectorTest.evaluateInPage("setTimeout(addInlineStyleSheetDeprecated, 0)");
+
+            function didShowSource(sourceFrame)
+            {
+                InspectorTest.addResult(sourceFrame.textEditor.text());
+                forEachHeaderMatchingURL("addedInlineStylesheetDeprecated", checkHeaderHasSourceURL);
+                next();
+            }
+        },
+
         function testNonRelativeURL(next)
         {
             InspectorTest.showScriptSource("/css/nonRelativeInlineStylesheet.css", didShowSource);