Removed duplicating method.

idea/src/org/jetbrains/jet/plugin/JetPluginUtil.java

@@ -104,18 +104,6 @@ public class JetPluginUtil {
         return includeLibrarySources ? index.isInSource(virtualFile) : index.isInSourceContent(virtualFile);
     }
 
-    public static boolean isInSource(@NotNull PsiElement element) {
-        PsiFile containingFile = element.getContainingFile();
-        if (containingFile == null) {
-            return false;
-        }
-        VirtualFile virtualFile = containingFile.getVirtualFile();
-        if (virtualFile == null) {
-            return false;
-        }
-        return ProjectFileIndex.SERVICE.getInstance(element.getProject()).isInSource(virtualFile);
-    }
-
     @NotNull
     public static String getPluginVersion() {
         IdeaPluginDescriptor plugin = PluginManager.getPlugin(PluginId.getId("org.jetbrains.kotlin"));

idea/src/org/jetbrains/jet/plugin/run/JetJUnitConfigurationProducer.java

@@ -51,7 +51,7 @@ public class JetJUnitConfigurationProducer extends RuntimeConfigurationProducer
     protected RunnerAndConfigurationSettings createConfigurationByElement(Location location, ConfigurationContext context) {
         PsiElement leaf = location.getPsiElement();
 
-        if (!JetPluginUtil.isInSource(leaf)) {
+        if (!JetPluginUtil.isInSourceContent(leaf, true)) {
             return null;
         }
 

idea/src/org/jetbrains/jet/plugin/run/JetRunConfigurationProducer.java

@@ -63,7 +63,7 @@ public class JetRunConfigurationProducer extends RuntimeConfigurationProducer im
         }
 
         JetFile file = getStartClassFile(location);
-        if (file == null || !JetPluginUtil.isInSource(file)) {
+        if (file == null || !JetPluginUtil.isInSourceContent(file, true)) {
             return null;
         }
 

idea/src/org/jetbrains/jet/plugin/run/JetTestNgConfigurationProducer.java

@@ -52,7 +52,7 @@ public class JetTestNgConfigurationProducer extends TestNGConfigurationProducer
         Project project = context.getProject();
         PsiElement leaf = location.getPsiElement();
 
-        if (!JetPluginUtil.isInSource(leaf)) {
+        if (!JetPluginUtil.isInSourceContent(leaf, true)) {
             return false;
         }