Rename toDelegateFor to provideDelegate.

compiler/testData/codegen/box/delegatedProperty/provideDelegate/memberExtension.kt

@@ -0,0 +1,15 @@
+// WITH_RUNTIME
+
+object Host {
+    class StringDelegate(val s: String) {
+        operator fun getValue(receiver: String, p: Any) = receiver + s
+    }
+
+    operator fun String.provideDelegate(host: Any?, p: Any) = StringDelegate(this)
+
+    val String.plusK by "K"
+
+    val ok = "O".plusK
+}
+
+fun box(): String = Host.ok