Add breakOnCaughtException and breakOnUncaughtException flags

src/debug.cc

Index: src/debug.cc
diff --git a/src/debug.cc b/src/debug.cc
index 87780d350ccd9d4217b4e978f3588423e9fc4203..24b1d310970092fca11af6a2af22a70061df2445 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -1200,6 +1200,15 @@ void Debug::ChangeBreakOnException(ExceptionBreakType type, bool enable) {
 }
 
 
+bool Debug::IsBreakOnException(ExceptionBreakType type) {
+  if (type == BreakUncaughtException) {
+    return break_on_uncaught_exception_;
+  } else {
+    return break_on_exception_;
+  }
+}
+
+
 void Debug::PrepareStep(StepAction step_action, int step_count) {
   HandleScope scope;
   ASSERT(Debug::InDebugger());