Support column-based breakpoints in the VM and Observatory.

runtime/observatory/tests/service/deferred_library.dart

Index: runtime/observatory/tests/service/deferred_library.dart
diff --git a/runtime/observatory/tests/ui/inspector_part.dart b/runtime/observatory/tests/service/deferred_library.dart
similarity index 52%
copy from runtime/observatory/tests/ui/inspector_part.dart
copy to runtime/observatory/tests/service/deferred_library.dart
index 7d3bcb62e4f208dffcbe734e26d0a25d67f98d3d..d2074ee6dd7d619fdbdf1e045b5166ac662b2686 100644
--- a/runtime/observatory/tests/ui/inspector_part.dart
+++ b/runtime/observatory/tests/service/deferred_library.dart
@@ -2,20 +2,17 @@
 // 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.
 
-part of manual_inspector_test;
+library deferred_library;
 
-functionInPart() {
+int value = 0;
 
+int decValue(int amount) {
+  value -= amount;
+  return amount;
 }
 
-set explicitSetter(x) {}
+void deferredTest() {
+  decValue(decValue(1));  // line 15
 
-get explicitGetter {}
-
-
-class D {
-  set explicitSetter(x) {}
-
-  get explicitGetter {}
+  decValue(decValue(1));  // line 17
 }
-