DevTools: allow blackboxing anonymous scripts

BUG=526239

Review URL: https://codereview.chromium.org/1315193014

git-svn-id: svn://svn.chromium.org/blink/trunk@201661 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-blackbox-patterns.html

@@ -14,7 +14,7 @@ function test()
         "http://www.google.com/", "www\\.google\\.com\\b",
         "data:text/html,foo", "",
         "about:blank", "",
-        "", "",
+        "", "^$",
         "chrome-extension://extensionName/main.js", "^chrome-extension://extensionName\\b.*/main\\.js$",
         "extensions::unload_events", "^extensions::unload_events$",
     ];

third_party/WebKit/Source/devtools/front_end/bindings/BlackboxSupport.js

@@ -11,7 +11,7 @@ WebInspector.BlackboxSupport = {}
 WebInspector.BlackboxSupport._urlToRegExpString = function(url)
 {
     var parsedURL = new WebInspector.ParsedURL(url);
-    if (parsedURL.isAboutBlank() || parsedURL.isDataURL() || !url)
+    if (parsedURL.isAboutBlank() || parsedURL.isDataURL())
         return "";
     if (!parsedURL.isValid)
         return "^" + url.escapeForRegExp() + "$";
@@ -104,7 +104,7 @@ WebInspector.BlackboxSupport.unblackbox = function(url, isContentScript)
 WebInspector.BlackboxSupport.isBlackboxedURL = function(url)
 {
     var regex = WebInspector.moduleSetting("skipStackFramesPattern").asRegExp();
-    return (url && regex) ? regex.test(url) : false;
+    return regex && regex.test(url);
 }
 
 /**