Support setting brekpoint by script name set in //@ scriptURL= comment,

test/mjsunit/debug-setbreakpoint.js

Index: test/mjsunit/debug-setbreakpoint.js
diff --git a/test/mjsunit/debug-setbreakpoint.js b/test/mjsunit/debug-setbreakpoint.js
index 08492b4eccde7e1e2c93c7a29e546a26a56179b6..3981dc45bbbb45c73f670ceb9d03d76d6c736739 100644
--- a/test/mjsunit/debug-setbreakpoint.js
+++ b/test/mjsunit/debug-setbreakpoint.js
@@ -116,6 +116,8 @@ function listener(event, exec_state, event_data, data) {
     mirror = debug.MakeMirror(o.a);
     testArguments(dcp, '{"type":"handle","target":' + mirror.handle() + '}', true, false);
 
+    testArguments(dcp, '{"type":"script","target":"sourceUrlScript","line":1}', true, true);
+
     // Indicate that all was processed.
     listenerComplete = true;
   }
@@ -136,6 +138,7 @@ function g() {
 };
 
 eval('function h(){}');
+eval('function sourceUrlFunc() { a = 2; }\n//@ sourceURL=sourceUrlScript');
 
 o = {a:function(){},b:function(){}}
 
@@ -143,9 +146,12 @@ o = {a:function(){},b:function(){}}
 f_script_id = Debug.findScript(f).id;
 g_script_id = Debug.findScript(g).id;
 h_script_id = Debug.findScript(h).id;
+sourceURL_script_id = Debug.findScript(sourceUrlFunc).id;
+
 assertTrue(f_script_id > 0, "invalid script id for f");
 assertTrue(g_script_id > 0, "invalid script id for g");
 assertTrue(h_script_id > 0, "invalid script id for h");
+assertTrue(sourceURL_script_id > 0, "invalid script id for sourceUrlFunc");
 assertEquals(f_script_id, g_script_id);
 
 // Get the source line for the test functions.
@@ -161,5 +167,20 @@ assertEquals(h_line, 0, "invalid line for h");
 Debug.setBreakPoint(g, 0, 0);
 g();
 
-// Make sure that the debug event listener vas invoked.
+// Make sure that the debug event listener was invoked.
 assertTrue(listenerComplete, "listener did not run to completion: " + exception);
+
+// Try setting breakpoint by url specified in sourceURL
+
+var breakListenerCalled = false;
+
+function breakListener(event) {
+  if (event == Debug.DebugEvent.Break)
+    breakListenerCalled = true;
+}
+
+Debug.setListener(breakListener);
+
+sourceUrlFunc();
+
+assertTrue(breakListenerCalled, "Break listener not called on breakpoint set by sourceURL");