KT-2170 "private" keyword completion does not work before "val"

#KT-2170 Fixed

idea/src/org/jetbrains/jet/plugin/completion/JetKeywordCompletionContributor.java

@@ -31,6 +31,7 @@ import com.intellij.psi.filters.*;
 import com.intellij.psi.filters.position.FilterPattern;
 import com.intellij.psi.filters.position.LeftNeighbour;
 import com.intellij.psi.filters.position.PositionElementFilter;
+import com.intellij.psi.filters.position.SuperParentFilter;
 import com.intellij.psi.impl.source.tree.LeafPsiElement;
 import com.intellij.psi.util.PsiTreeUtil;
 import com.intellij.util.ArrayUtil;
@@ -294,6 +295,10 @@ public class JetKeywordCompletionContributor extends CompletionContributor {
                                         PROTECTED_KEYWORD, PUBLIC_KEYWORD, SET_KEYWORD,
                                         TYPE_KEYWORD);
 
+        registerScopeKeywordsCompletion(new SuperParentFilter(new ClassFilter(JetModifierList.class)),
+                                        ABSTRACT_KEYWORD, FINAL_KEYWORD, INLINE_KEYWORD, INTERNAL_KEYWORD,
+                                        OPEN_KEYWORD, PRIVATE_KEYWORD, PROTECTED_KEYWORD, PUBLIC_KEYWORD);
+
         registerScopeKeywordsCompletion(new InClassBodyFilter(),
                                         ABSTRACT_KEYWORD,
                                         FINAL_KEYWORD, GET_KEYWORD,

idea/testData/completion/keywords/InModifierListInsideClass.kt

@@ -0,0 +1,6 @@
+open class Foo {
+    p<caret> val foo = 1
+}
+
+// FOR: KT-2170
+// EXIST: private, public, protected

idea/tests/org/jetbrains/jet/completion/KeywordsCompletionTest.java

@@ -87,6 +87,10 @@ public class KeywordsCompletionTest extends JetCompletionTestBase {
         doTest();
     }
 
+    public void testInModifierListInsideClass() {
+        doTest();
+    }
+
     public void testInString() {
         doTest();
     }