Add API to configure debugger pause on exception

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;
@@ skipping 247 matching lines @@
 
 /**
  * Installs a callback function that gets called by the VM when
  * an exception has been thrown.
  *
  * Requires there to be a current isolate.
  */
 DART_EXPORT void Dart_SetExceptionThrownHandler(
                             Dart_ExceptionThrownHandler handler);
 
+
+// On which exceptions to pause.
+typedef enum {
+  kNoPauseOnExceptions = 1,
+  kPauseOnUnhandledExceptions,
+  kPauseOnAllExceptions,
+} Dart_ExceptionPauseInfo;
+
+/**
+ * Define on which exceptions the debugger pauses.
+ *
+ * Requires there to be a current isolate.
+ */
+DART_EXPORT Dart_Handle Dart_SetExceptionPauseInfo(
+                            Dart_ExceptionPauseInfo pause_info);
+
+
 /**
  * Returns in \trace the the current stack trace, or NULL if the
  * VM is not paused.
  *
  * Requires there to be a current isolate.
  *
  * \return A handle to the True object if no error occurs.
  */
 DART_EXPORT Dart_Handle Dart_GetStackTrace(Dart_StackTrace* trace);
 
@@ skipping 181 matching lines @@
 * Returns the url of the library \library_id.
 *
 * Requires there to be a current isolate.
 *
 * \return A string handle containing the URL of the library.
 */
 DART_EXPORT Dart_Handle Dart_GetLibraryURL(intptr_t library_id);
 
 
 #endif  // INCLUDE_DART_DEBUGGER_API_H_