Handle "//# sourceURL" comments in the Parser instead of the JS.

test/mjsunit/debug-compile-event.js

 // Copyright 2009 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 67 matching lines @@
         // For source without 'eval' there will be a compile events with the
         // exact source.
         assertEquals(current_source, event_data.script().source());
       }
       // Check that script context is included into the event message.
       var json = event_data.toJSONProtocol();
       var msg = eval('(' + json + ')');
       assertTrue('context' in msg.body.script);
 
       // Check that we pick script name from //# sourceURL, iff present
-      assertEquals(current_source.indexOf('sourceURL') >= 0 ?
-                     'myscript.js' : undefined,
-                   event_data.script().name());
+      if (event == Debug.DebugEvent.AfterCompile) {
+        assertEquals(current_source.indexOf('sourceURL') >= 0 ?
+            'myscript.js' : undefined,
+                     event_data.script().name());
+      }
     }
   } catch (e) {
     exception = e
   }
 };
 
 
 // Add the debug event listener.
 Debug.setListener(listener);
 
@@ skipping 20 matching lines @@
 assertEquals(before_compile_count, after_compile_count + compile_error_count);
 assertEquals(compile_error_count, 1);
 
 // Check the actual number of events (no compilation through the API as all
 // source compiled through eval).
 assertEquals(source_count, after_compile_count);
 assertEquals(0, host_compilations);
 assertEquals(source_count, eval_compilations);
 
 Debug.setListener(null);