KT-5103 No delegated members in Override/Implement

#KT-5103 Fixed

idea/src/org/jetbrains/jet/plugin/codeInsight/OverrideMethodsHandler.java

@@ -40,7 +40,7 @@ public class OverrideMethodsHandler extends OverrideImplementMethodsHandler {
         for (DeclarationDescriptor member : descriptor.getDefaultType().getMemberScope().getAllDescriptors()) {
             if (member instanceof CallableMemberDescriptor) {
                 CallableMemberDescriptor callable = (CallableMemberDescriptor) member;
-                if (callable.getKind().isReal()) {
+                if (callable.getKind() == CallableMemberDescriptor.Kind.DECLARATION) {
                     superMethods.removeAll(callable.getOverriddenDescriptors());
                 }
             }

idea/testData/codeInsight/overrideImplement/delegatedMembers.kt

@@ -0,0 +1,10 @@
+trait T {
+    fun foo()
+    fun bar()
+}
+
+class C(t :T) : T by t {
+    <caret>
+}
+
+// KT-5103

idea/testData/codeInsight/overrideImplement/delegatedMembers.kt.after

@@ -0,0 +1,25 @@
+trait T {
+    fun foo()
+    fun bar()
+}
+
+class C(t :T) : T by t {
+
+    override fun bar() {
+        throw UnsupportedOperationException()
+    }
+    override fun equals(other: Any?): Boolean {
+        return super<T>.equals(other)
+    }
+    override fun foo() {
+        throw UnsupportedOperationException()
+    }
+    override fun hashCode(): Int {
+        return super<T>.hashCode()
+    }
+    override fun toString(): String {
+        return super<T>.toString()
+    }
+}
+
+// KT-5103

idea/tests/org/jetbrains/jet/plugin/codeInsight/OverrideImplementTest.java

@@ -107,6 +107,10 @@ public final class OverrideImplementTest extends AbstractOverrideImplementTest {
         doMultiOverrideFileTest();
     }
 
+    public void testDelegatedMembers() {
+        doMultiOverrideFileTest();
+    }
+
     public void testOverrideExplicitFunction() {
         doOverrideFileTest();
     }