IDEA-160958 Smart completion should suggest method references of outer class

java/java-tests/testData/codeInsight/completion/smartType/OuterMethodReference-out.java

@@ -0,0 +1,9 @@
+class Outer {
+  void foo(){}
+
+  class Inner {
+    void bar() {
+      Runnable r = Outer.this::foo;<caret>
+    }
+  }
+}

java/java-tests/testData/codeInsight/completion/smartType/OuterMethodReference.java

@@ -0,0 +1,9 @@
+class Outer {
+  void foo(){}
+
+  class Inner {
+    void bar() {
+      Runnable r = fo<caret>
+    }
+  }
+}