Write line numbers for bridge methods (line for class header)

idea/testData/debugger/tinyApp/src/stepInto/stepInto/syntheticMethods.kt

@@ -0,0 +1,22 @@
+package syntheticMethods
+
+fun main(args: Array<String>) {
+    val d: Base<String> = Derived()
+    //Breakpoint!
+    d.foo("")
+    val a = 1
+}
+
+open class Base<T> {
+    open fun foo(t: T) {
+        val a = 1
+    }
+}
+
+class Derived: Base<String>() {
+    override fun foo(t: String) {
+        val a = 1
+    }
+}
+
+// STEP_INTO: 3