Switch to using SourceLocation universally in service protocol.

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

Index: runtime/observatory/lib/src/elements/class_view.html
diff --git a/runtime/observatory/lib/src/elements/class_view.html b/runtime/observatory/lib/src/elements/class_view.html
index dc4121e65fd6c6cb9bb831c0fa03639189785027..10f67fc8bf5002e774c2a180b6c8dcf95f304f31 100644
--- a/runtime/observatory/lib/src/elements/class_view.html
+++ b/runtime/observatory/lib/src/elements/class_view.html
@@ -45,8 +45,7 @@
         <div class="memberItem">
           <div class="memberName">script</div>
           <div class="memberValue">
-            <script-ref ref="{{ cls.script }}" pos="{{ cls.tokenPos }}">
-            </script-ref>
+            <source-link location="{{ cls.location }}"></source-link>
           </div>
         </div>
 
@@ -208,10 +207,8 @@
     <hr>
 
     <div class="content-centered-big">
-      <script-inset script="{{ cls.script }}"
-                    startPos="{{ cls.tokenPos }}"
-                    endPos="{{ cls.endTokenPos }}">
-      </script-inset>
+      <source-inset location="{{ cls.location }}">
+      </source-inset>
     </div>
 
     <view-footer></view-footer>