Sundry service protocol cleanups before version 1.0.

runtime/observatory/lib/src/elements/debugger.html

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="function_ref.html">
 <link rel="import" href="nav_bar.html">
 <link rel="import" href="eval_link.html">
 <link rel="import" href="observatory_element.html">
 <link rel="import" href="script_inset.html">
 <link rel="import" href="script_ref.html">
 
 <!-- TODO(turnidge): Use core-icon once core_elements work properly in
      devtools -->
@@ skipping 223 matching lines @@
       .flex-item-vars {
         flex-grow: 5;
         flex-shrink: 0;
         flex-basis: 225px;
       }
     </style>
     <div id="frameOuter" class="frameOuter">
       <a on-click="{{ toggleExpand }}">
         <div class="frameSummary">
           <div class="frameSummaryText">
-            <div class="frameId"><b>frame {{ frame['depth'] }}</b></div>
+            <div class="frameId"><b>frame {{ frame['index'] }}</b></div>
             <function-ref ref="{{ frame['function'] }}"></function-ref>
             ( <script-ref ref="{{ frame['script'] }}"
                           pos="{{ frame['tokenPos'] }}">
             </script-ref> )
           </div>
           <template if="{{ !expanded }}">
             <div class="frameExpander">
               <icon-expand-more></icon-expand-more>
             </div>
           </template>
@@ skipping 93 matching lines @@
       .flex-item-vars {
         flex-grow: 5;
         flex-shrink: 0;
         flex-basis: 225px;
       }
     </style>
     <div id="messageOuter" class="messageOuter">
       <a on-click="{{ toggleExpand }}">
         <div class="messageSummary">
           <div class="messageSummaryText">
-            <div class="messageId"><b>message {{ message['depth'] }}</b></div>
+            <div class="messageId"><b>message {{ message['index'] }}</b></div>
             <function-ref ref="{{ message['handlerFunction'] }}"></function-ref>
             ( <script-ref ref="{{ message['handlerScript'] }}"
                           pos="{{ message['handlerTokenPos'] }}">
             </script-ref> )
           </div>
           <template if="{{ !expanded }}">
             <div class="messageExpander">
               <icon-expand-more></icon-expand-more>
             </div>
           </template>
@@ skipping 77 matching lines @@
         margin: 20px;
         font: 400 16px consolas, courier, monospace;
         width: 95%;
       }
     </style>
     <input id="textBox" class="textBox" type="text" value="{{ text }}" autofocus>
   </template>
 </polymer-element>
 
 <script type="application/dart" src="debugger.dart"></script>