Avoid using Function.prototype.call in a number of places in our

test/mjsunit/debug-backtrace-text.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 62 matching lines @@
 function listener(event, exec_state, event_data, data) {
   try {
   if (event == Debug.DebugEvent.Break)
   {
     if (!testConstructor) {
       // The expected backtrace is
       // 0: Call distance on Point where distance is a property on the prototype
       // 1: Call distance on Point where distance is a direct property
       // 2: Call on function an array element 2
       // 3: [anonymous]
-      assertEquals("#<a Point>.distanceTo(p=#<a Point>)", exec_state.frame(0).invocationText());
-      assertEquals("#<a Point>.distanceTo(p=#<a Point>)", exec_state.frame(1).invocationText());
-      assertEquals("#<an Array>[2](aka distance)(p=#<a Point>, q=#<a Point>)", exec_state.frame(2).invocationText());
+      assertEquals("#<Point>.distanceTo(p=#<Point>)", exec_state.frame(0).invocationText());
+      assertEquals("#<Point>.distanceTo(p=#<Point>)", exec_state.frame(1).invocationText());
+      assertEquals("#<Array>[2](aka distance)(p=#<Point>, q=#<Point>)", exec_state.frame(2).invocationText());
       assertEquals("[anonymous]()", exec_state.frame(3).invocationText());
       listenerCalled = true;
     } else {
       // The expected backtrace is
       // 0: Call Point constructor
       // 1: Call on global function createPoint
       // 2: [anonymous]
       assertEquals("new Point(x=0, y=0)", exec_state.frame(0).invocationText());
       assertEquals("createPoint(x=0, y=0)", exec_state.frame(1).invocationText());
       assertEquals("[anonymous]()", exec_state.frame(2).invocationText());
@@ skipping 17 matching lines @@
 
 // Set a break point and call to invoke the debug event listener.
 listenerCalled = false;
 testConstructor = true;
 Debug.setBreakPoint(Point, 0, 0);
 createPoint(0, 0);
 
 // Make sure that the debug event listener vas invoked (again).
 assertTrue(listenerCalled);
 assertFalse(exception, "exception in listener")