DevTools: Get rid of synchronous XHRs in the frontend code

Source/devtools/front_end/ui/View.js

Index: Source/devtools/front_end/ui/View.js
diff --git a/Source/devtools/front_end/ui/View.js b/Source/devtools/front_end/ui/View.js
index 611e1ae8c1d900a2defc39fcdb813e7137492c80..95b55ca3d40dfb1b1c55e9d38725971afe634b95 100644
--- a/Source/devtools/front_end/ui/View.js
+++ b/Source/devtools/front_end/ui/View.js
@@ -61,13 +61,9 @@ WebInspector.View._buildSourceURL = function(cssFile)
  */
 WebInspector.View.createStyleElement = function(cssFile)
 {
-    var content = Runtime.cachedResources[cssFile];
-    if (!content) {
-        if (Runtime.isReleaseMode())
-            console.error(cssFile + " not preloaded, loading from the remote. Check module.json");
-        content = loadResource(cssFile) + WebInspector.View._buildSourceURL(cssFile);
-        Runtime.cachedResources[cssFile] = content;
-    }
+    var content = Runtime.cachedResources[cssFile] || "";
+    if (!content)
+        console.error(cssFile + " not preloaded. Check module.json");
     var styleElement = createElement("style");
     styleElement.type = "text/css";
     styleElement.textContent = content;