Change Signature: Support conversion between extension and non-extension functions

idea/testData/refactoring/changeSignature/RemoveReceiverForMemberBefore.kt

@@ -0,0 +1,19 @@
+class A(val k: Int) {
+    fun X.<caret>foo(s: String, n: Int): Boolean {
+        return s.length() * this.k - n.inc() + this@A.k > 0
+    }
+
+    fun test() {
+        X(0).foo("1", 2)
+    }
+}
+
+class X(val k: Int)
+
+fun <T, R> with(receiver: T, f: T.() -> R): R = receiver.f()
+
+fun test() {
+    with(A(3)) {
+        X(0).foo("1", 2)
+    }
+}