Implement deletion of breakpoints

runtime/vm/debugger_api_impl.cc

 // Copyright (c) 2011, 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 "include/dart_debugger_api.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
 #include "vm/debugger.h"
 #include "vm/isolate.h"
@@ skipping 191 matching lines @@
       *breakpoint = reinterpret_cast<Dart_Breakpoint>(bpt);
     }
   } else {
     SetupErrorResult(&result);
   }
   isolate->set_long_jump_base(base);
   return result;
 }
 
 
+DART_EXPORT Dart_Handle Dart_DeleteBreakpoint(
+                            Dart_Breakpoint breakpoint_in) {
+  Isolate* isolate = Isolate::Current();
+  DARTSCOPE(isolate);
+
+  CHECK_AND_CAST(Breakpoint, breakpoint, breakpoint_in);
+  isolate->debugger()->RemoveBreakpoint(breakpoint);
+  return Api::True();
+}
+
 }  // namespace dart