Allow stepping when paused at isolate start.

runtime/observatory/lib/src/elements/debugger.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.
 
 library debugger_page_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'observatory_element.dart';
 import 'package:observatory/app.dart';
@@ skipping 459 matching lines @@
       'activation of an async or async* function.\n'
       '\n'
       'Syntax: anext\n';
 }
 
 class FinishCommand extends DebuggerCommand {
   FinishCommand(Debugger debugger) : super(debugger, 'finish', []);
 
   Future run(List<String> args) {
     if (debugger.isolatePaused()) {
+      var event = debugger.isolate.pauseEvent;
+      if (event.kind == ServiceEvent.kPauseStart) {
+        debugger.console.print(
+            "Type 'continue' [F7] or 'step' [F10] to start the isolate");
+        return new Future.value(null);
+      }
+      if (event.kind == ServiceEvent.kPauseExit) {
+        debugger.console.print("Type 'continue' [F7] to exit the isolate");
+        return new Future.value(null);
+      }
       return debugger.isolate.stepOut();
     } else {
       debugger.console.print('The program is already running');
       return new Future.value(null);
     }
   }
 
   String helpShort =
       'Continue running the isolate until the current function exits';
 
@@ skipping 842 matching lines @@
       _reportPause(_isolate.pauseEvent);
     } else {
       console.print('Isolate is in unknown state');
     }
     warnOutOfDate();
   }
 
   void _reportPause(ServiceEvent event) {
     if (event.kind == ServiceEvent.kPauseStart) {
       console.print(
-          "Paused at isolate start (type 'continue' or [F7] to start the isolate')");
+          "Paused at isolate start (type 'continue' [F7] or 'step' [F10] to start the isolate')");
     } else if (event.kind == ServiceEvent.kPauseExit) {
       console.print(
           "Paused at isolate exit (type 'continue' or [F7] to exit the isolate')");
     }
     if (stack['frames'].length > 0) {
       Frame frame = stack['frames'][0];
       var script = frame.location.script;
       script.load().then((_) {
         var line = script.tokenToLine(frame.location.tokenPos);
         var col = script.tokenToCol(frame.location.tokenPos);
@@ skipping 252 matching lines @@
         await Future.wait(pending);
       }
     }
     return new Future.value(null);
   }
 
   Future next() {
     if (isolatePaused()) {
       var event = isolate.pauseEvent;
       if (event.kind == ServiceEvent.kPauseStart) {
-        console.print("Type 'continue' or [F7] to start the isolate");
+        console.print("Type 'continue' [F7] or 'step' [F10] to start the isolate");
         return new Future.value(null);
       }
       if (event.kind == ServiceEvent.kPauseExit) {
-        console.print("Type 'continue' or [F7] to exit the isolate");
+        console.print("Type 'continue' [F7] to exit the isolate");
         return new Future.value(null);
       }
       return isolate.stepOver();
     } else {
       console.print('The program is already running');
       return new Future.value(null);
     }
   }
 
   Future step() {
     if (isolatePaused()) {
       var event = isolate.pauseEvent;
-      if (event.kind == ServiceEvent.kPauseStart) {
-        console.print("Type 'continue' or [F7] to start the isolate");
-        return new Future.value(null);
-      }
       if (event.kind == ServiceEvent.kPauseExit) {
-        console.print("Type 'continue' or [F7] to exit the isolate");
+        console.print("Type 'continue' [F7] to exit the isolate");
         return new Future.value(null);
       }
       return isolate.stepInto();
     } else {
       console.print('The program is already running');
       return new Future.value(null);
     }
   }
 }
 
@@ skipping 651 matching lines @@
         }
       });
   }
 
   void focus() {
     $['textBox'].focus();
   }
 
   DebuggerInputElement.created() : super.created();
 }