Fix for an issue w/ breakpointResolved events not being sent.

tests/standalone/debugger/breakpoint_resolved_test.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "debug_lib.dart";
+
+main() {
+  if (RunScript(testScript)) return;
+  
+  bar();
+  
+  print("Hello from debuggee");
+}
+
+bar() {
+  
+  print("bar");
+}
+
+var testScript = [
+  MatchFrame(0, "main"),
+  SetBreakpoint(10),
+  SetBreakpoint(12),
+  SetBreakpoint(16),
+  Resume(),
+  MatchFrame(0, "main"),
+  Resume(),
+  MatchFrame(0, "bar"),
+  Resume(),
+  MatchFrame(0, "main"),
+  ExpectEvent("breakpointResolved", {"breakpointId": 1}),
+  ExpectEvent("breakpointResolved", {"breakpointId": 2}),
+  ExpectEvent("breakpointResolved", {"breakpointId": 3}),
+  Resume(),
+];