Use tokenPos instead of line/col in the vm service.

runtime/bin/vmservice/client/lib/src/elements/stack_frame.html

Index: runtime/bin/vmservice/client/lib/src/elements/stack_frame.html
diff --git a/runtime/bin/vmservice/client/lib/src/elements/stack_frame.html b/runtime/bin/vmservice/client/lib/src/elements/stack_frame.html
index a9657653b5d80a14eb7a14818ed7ce07265b395d..86ba9792f91cf16e8c1ee32b4a6adb433284d916 100644
--- a/runtime/bin/vmservice/client/lib/src/elements/stack_frame.html
+++ b/runtime/bin/vmservice/client/lib/src/elements/stack_frame.html
@@ -28,7 +28,8 @@
       </div>
       <div class="col-md-9">
         <function-ref ref="{{ frame['function'] }}"></function-ref>
-        ( <script-ref ref="{{ frame['script'] }}" line="{{ frame['line'] }}">
+        ( <script-ref ref="{{ frame['script'] }}"
+                      pos="{{ frame['tokenPos'] }}">
         </script-ref> )
 
         <curly-block>