Update usages of FlowLabel

Author: Jami Cogswell

javascript/lib/browserextension/BrowserInjectionFieldCustomizations.qll

@@ -9,15 +9,14 @@ private import semmle.javascript.security.dataflow.XssThroughDomCustomizations::
 
 module BrowserInjection {
 
-  private import DataFlow::FlowLabel
   /**
    * A data flow source for Chrome API injection vulnerabilities.
    */
   abstract class Source extends DataFlow::Node { 
 
 
 
-    DataFlow::FlowLabel getFlowLabel() { result = "BrowserSource" }
+    string getFlowLabel() { result = "BrowserSource" }
   }
 
   /**

javascript/lib/browserextension/BrowserInjectionObjectCustomizations.qll

@@ -8,15 +8,14 @@ private import browserextension.BrowserAPI
 
 module BrowserInjection {
 
-  private import DataFlow::FlowLabel
   /**
    * A data flow source for Chrome API injection vulnerabilities.
    */
   abstract class Source extends DataFlow::Node { 
 
 
 
-    DataFlow::FlowLabel getFlowLabel() { result = "BrowserSource" }
+    string getFlowLabel() { result = "BrowserSource" }
   }
 
   /**