Allow setting break-on-exceptions option over the service protocol.

runtime/vm/service_event.h

 // Copyright (c) 2015, 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.
 
 #ifndef VM_SERVICE_EVENT_H_
 #define VM_SERVICE_EVENT_H_
 
 #include "vm/debugger.h"
 
 class DebuggerEvent;
@@ skipping 10 matching lines @@
     kPauseStart,         // --pause-isolates-on-start
     kPauseExit,          // --pause-isolates-on-exit
     kPauseBreakpoint,
     kPauseInterrupted,
     kPauseException,
     kResume,
     kBreakpointAdded,
     kBreakpointResolved,
     kBreakpointRemoved,
     kInspect,
+    kDebuggerSettingsUpdate,
 
     kGC,
 
     kIllegal,
   };
 
   ServiceEvent(Isolate* isolate, EventType event_type)
       : isolate_(isolate),
         type_(event_type),
         breakpoint_(NULL),
@@ skipping 66 matching lines @@
   Breakpoint* breakpoint_;
   ActivationFrame* top_frame_;
   const Object* exception_;
   const Object* inspectee_;
   const Heap::GCStats* gc_stats_;
 };
 
 }  // namespace dart
 
 #endif  // VM_SERVICE_EVENT_H_