Revert of DevTools: require enabling CSS domain before running CSS.* commands.

third_party/WebKit/LayoutTests/inspector-protocol/css/css-get-platform-fonts.html

Index: third_party/WebKit/LayoutTests/inspector-protocol/css/css-get-platform-fonts.html
diff --git a/third_party/WebKit/LayoutTests/inspector-protocol/css/css-get-platform-fonts.html b/third_party/WebKit/LayoutTests/inspector-protocol/css/css-get-platform-fonts.html
index bc8d88007d779c6397fd27fe80b8eb7f4fa50cf8..616c59419ca39a96d2793fa20c032603fca34065 100644
--- a/third_party/WebKit/LayoutTests/inspector-protocol/css/css-get-platform-fonts.html
+++ b/third_party/WebKit/LayoutTests/inspector-protocol/css/css-get-platform-fonts.html
@@ -28,13 +28,20 @@
     }
 
 
-    async function platformFontsForElementWithSelector(selector, callback)
+    function platformFontsForElementWithSelector(selector, callback)
     {
-        var nodeId = await InspectorTest.requestNodeId(documentNodeId, selector);
-        await InspectorTest.sendCommandOrDie("CSS.enable", {  });
-        var response = await InspectorTest.sendCommandOrDie("CSS.getPlatformFontsForNode", { nodeId: nodeId });
-        dumpComputedFonts(response);
-        callback();
+        InspectorTest.requestNodeId(documentNodeId, selector, onNodeId);
+
+        function onNodeId(nodeId)
+        {
+            InspectorTest.sendCommandOrDie("CSS.getPlatformFontsForNode", { nodeId: nodeId }, onGotComputedFonts);
+        }
+
+        function onGotComputedFonts(response)
+        {
+            dumpComputedFonts(response);
+            callback();
+        }
     }
 
     function dumpComputedFonts(response)