First bits of external debugger API

runtime/include/dart_debugger_api.h

+// 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.
+
+#ifndef INCLUDE_DART_DEBUGGER_API_H_
+#define INCLUDE_DART_DEBUGGER_API_H_
+
+#include "include/dart_api.h"
+
+typedef struct _Dart_Breakpoint* Dart_Breakpoint;
+
+
+/**
+ * Sets a breakpoint at the entry of the given function. If class_name
+ * is the empty string, looks for a library function with the given
+ * name.
+ *
+ * Requires there to be a current isolate.
+ *
+ * \breakpoint If non-null, will point to the breakpoint object
+ *   if a breakpoint was successfully created.
+ *
+ * \return A handle to the True object if no error occurs.
+ */
+DART_EXPORT Dart_Handle Dart_SetBreakpointAtEntry(
+                            Dart_Handle library,
+                            Dart_Handle class_name,
+                            Dart_Handle function_name,
+                            Dart_Breakpoint* breakpoint);
+
+#endif  // INCLUDE_DART_DEBUGGER_API_H_