Add a working command line debugger to Observatory.

runtime/vm/debugger.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 504 matching lines @@
     case kBreakpointResolved:
       return "BreakpointResolved";
     case kExceptionThrown:
       return "ExceptionThrown";
     case kIsolateCreated:
       return "IsolateCreated";
     case kIsolateShutdown:
       return "IsolateShutdown";
     case kIsolateInterrupted:
       return "IsolateInterrupted";
+    case kIsolateResumed:
+      return "IsolateResumed";
     default:
       UNREACHABLE();
       return "Unknown";
   }
 }
 
 
 void DebuggerEvent::PrintJSON(JSONStream* js) const {
   JSONObject jsobj(js);
   jsobj.AddProperty("type", "ServiceEvent");
   // TODO(turnidge): Drop the 'id' for things like DebuggerEvent.
   jsobj.AddProperty("id", "");
   jsobj.AddProperty("eventType", EventTypeToCString(type()));
   jsobj.AddProperty("isolate", isolate());
   if ((type() == kBreakpointResolved || type() == kBreakpointReached) &&
       breakpoint() != NULL) {
+    // TODO(turnidge): Make this a breakpoint ref.
     jsobj.AddProperty("breakpoint", breakpoint());
   }
   if (type() == kExceptionThrown) {
     jsobj.AddProperty("exception", *(exception()));
   }
 }
 
 
 ActivationFrame* DebuggerStackTrace::GetHandlerFrame(
     const Instance& exc_obj) const {
@@ skipping 2077 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart