Debugger: require debugger to be active when dealing with breaks.

test/mjsunit/es6/debug-evaluate-blockscopes.js

Index: test/mjsunit/es6/debug-evaluate-blockscopes.js
diff --git a/test/mjsunit/es6/debug-evaluate-blockscopes.js b/test/mjsunit/es6/debug-evaluate-blockscopes.js
index e24ca783157084cb81a82cec80ceddafb3bb5b24..efc334e35fb9a042449adbcef75ebc2f48bb54fe 100644
--- a/test/mjsunit/es6/debug-evaluate-blockscopes.js
+++ b/test/mjsunit/es6/debug-evaluate-blockscopes.js
@@ -48,8 +48,6 @@ function f() {
 
 // Get the Debug object exposed from the debug context global object.
 var Debug = debug.Debug
-// Set breakpoint on line 6.
-var bp = Debug.setBreakPoint(f, 6);
 
 function listener(event, exec_state, event_data, data) {
   if (event == Debug.DebugEvent.Break) {
@@ -59,6 +57,10 @@ function listener(event, exec_state, event_data, data) {
 
 // Add the debug event listener.
 Debug.setListener(listener);
+
+//Set breakpoint on line 6.
+var bp = Debug.setBreakPoint(f, 6);
+
 result = -1;
 f();
 assertEquals(1, result);
@@ -107,3 +109,5 @@ assertEquals(null, exception, exception);
 exception = null;
 f2();
 assertEquals(null, exception, exception);
+
+Debug.setListener(null);