Use getSourceReport for coverage/callsites in Observatory.

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

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="observatory_element.html">
 
+<polymer-element name="icon-refresh" noscript>
+  <template>
+    <style>
+      svg {
+        fill: currentColor
+      }
+    </style>
+    <svg width="24" height="24">
+      <path d="M17.65 6.35C16.2 4.9 14.21 4 12 4c-4.42 0-7.99 3.58-7.99 8s3.57 8 7.99 8c3.73 0 6.84-2.55 7.73-6h-2.08c-.82 2.33-3.04 4-5.65 4-3.31 0-6-2.69-6-6s2.69-6 6-6c1.66 0 3.14.69 4.22 1.78L13 11h7V4l-2.35 2.35z"/>
+    </svg>
+  </template>
+</polymer-element>
+
 <polymer-element name="script-inset" extends="observatory-element">
   <template>
     <style>
       a {
         color: #0489c3;
         text-decoration: none;
       }
       a:hover {
         text-decoration: underline;
       }
       .sourceInset {
       }
       .sourceTable {
+        position: relative;
         background-color: #f5f5f5;
         border: 1px solid #ccc;
         padding: 10px;
         width: 100%;
         box-sizing: border-box;
         overflow-x: scroll;
       }
       .sourceRow {
         display: flex;
         flex-direction: row;
         width: 100%;
       }
       .sourceItem, .sourceItemCurrent {
         vertical-align: top;
         font: 400 14px consolas, courier, monospace;
         line-height: 125%;
         white-space: pre;
         max-width: 0;
       }
       .currentLine {
         background-color: #fff;
       }
       .currentCol {
         background-color: #6cf;
       }
-      .hitsCurrent, .hitsNone, .hitsNotExecuted, .hitsExecuted {
+      .hitsCurrent, .hitsNone, .hitsNotExecuted, .hitsExecuted, .hitsCompiled, .hitsNotCompiled {
         display: table-cell;
         vertical-align: top;
         font: 400 14px consolas, courier, monospace;
         margin-left: 5px;
         margin-right: 5px;
         text-align: right;
         color: #a8a8a8;
       }
       .hitsCurrent {
         background-color: #6cf;
         color: black;
       }
       .hitsNotExecuted {
         background-color: #faa;
       }
       .hitsExecuted {
         background-color: #aea;
       }
+      .hitsCompiled {
+        background-color: #e0e0e0;
+      }
+      .hitsNotCompiled {
+        background-color: #f0c5c5;
+      }
+
       .noCopy {}
       .emptyBreakpoint, .possibleBreakpoint, .busyBreakpoint, .unresolvedBreakpoint, .resolvedBreakpoint  {
         display: table-cell;
         vertical-align: top;
         font: 400 14px consolas, courier, monospace;
         width: 1em;
         text-align: center;
         cursor: pointer;
       }
       .possibleBreakpoint {
@@ skipping 21 matching lines @@
         background-color: #cac;
       }
       .resolvedBreakAnnotation {
         color: white;
         background-color: #e66;
       }
     </style>
   </template>
 </polymer-element>
 
+<polymer-element name="refresh-button">
+  <template>
+    <style>
+      .refreshButton {
+        color: rgba(0,0,0,.3);
+      }
+      .refreshButton:hover {
+        color: black;
+      }
+      .refreshButtonDisabled {
+        color: white;
+        cursor: wait;
+      }
+    </style>
+    <template if="{{ callback != null }}">
+      <template if="{{ busy }}">
+        <icon-refresh id="refreshIcon" class="refreshButtonDisabled">
+        </icon-refresh>
+      </template>
+      <template if="{{ !busy }}">
+        <a on-click="{{ buttonClick }}">
+          <icon-refresh id="refreshIcon" class="refreshButton"></icon-refresh>
+        </a>
+      </template>
+    </template>
+  </template>
+</polymer-element>
 
 <polymer-element name="source-inset">
 <template>
   <template if="{{ location != null }}">
     <script-inset script="{{ location.script }}"
                   startPos="{{ location.tokenPos }}"
+                  scroller="{{ scroller }}"
                   endPos="{{ location.endTokenPos }}"
                   height="{{ height }}"
                   currentPos="{{ currentPos }}"
                   inDebuggerContext="{{ inDebuggerContext }}"
                   variables="{{ variables }}">
     </script-inset>
   </template>
 </template>
 </polymer-element>
 
 <script type="application/dart" src="script_inset.dart"></script>