Offer to make INVISIBLE_MEMBER protected if referenced from subclass

So #KT-19614 Fixed

idea/testData/quickfix/increaseVisibility/invisibleFake/methodToNotProtected.kt

@@ -0,0 +1,15 @@
+// "Make 'doSth' protected" "false"
+// ACTION: Make 'doSth' public
+// ACTION: Make 'doSth' internal
+// ERROR: Cannot access 'doSth': it is private in 'A'
+
+class A {
+    private fun doSth() {
+    }
+}
+
+class B {
+    fun bar() {
+        A().<caret>doSth()
+    }
+}