Implement function entry breakpoints in Observatory debugger.

runtime/observatory/lib/src/service/object.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // 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 service;
 
 /// A [ServiceObject] represents a persistent object within the vm.
 abstract class ServiceObject extends Observable {
   static int LexicalSortName(ServiceObject o1, ServiceObject o2) {
     return o1.name.compareTo(o2.name);
@@ skipping 1076 matching lines @@
           }).whenComplete(() {
               _inProgressReloadBpts = null;
           });
     }
     return _inProgressReloadBpts;
   }
 
   Future<ServiceObject> addBreakpoint(Script script, int line) {
     // TODO(turnidge): Pass line as an int instead of a string.
     Map params = {
-      'script': script.id,
+      'scriptId': script.id,
       'line': '$line',
     };
     return invokeRpc('addBreakpoint', params).then((result) {
       if (result is DartError) {
         return result;
       }
       Breakpoint bpt = result;
       if (bpt.resolved &&
           script.loaded &&
           script.tokenToLine(result.tokenPos) != line) {
         // Unable to set a breakpoint at desired line.
         script.lines[line - 1].possibleBpt = false;
       }
       // TODO(turnidge): Instead of reloading all of the breakpoints,
       // rely on events to update the breakpoint list.
       return reloadBreakpoints().then((_) {
         return result;
       });
     });
   }
 
+  Future<ServiceObject> addBreakpointAtEntry(ServiceFunction function) {
+    return invokeRpc('addBreakpointAtEntry',
+                     { 'functionId': function.id }).then((result) {
+        // TODO(turnidge): Instead of reloading all of the breakpoints,
+        // rely on events to update the breakpoint list.
+        return reloadBreakpoints().then((_) {
+            return result;
+        });
+      });
+  }
+
   Future removeBreakpoint(Breakpoint bpt) {
     return invokeRpc('removeBreakpoint',
                      { 'breakpointId': bpt.id }).then((result) {
         if (result is DartError) {
           // TODO(turnidge): Handle this more gracefully.
           Logger.root.severe(result.message);
           return result;
         }
         if (pauseEvent != null &&
             pauseEvent.breakpoint != null &&
@@ skipping 1778 matching lines @@
     var v = list[i];
     if ((v is ObservableMap) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is ObservableList) {
       _upgradeObservableList(v, owner);
     } else if (v is ObservableMap) {
       _upgradeObservableMap(v, owner);
     }
   }
 }