Bring toiger up to date with bleeding edge 984.

src/debug-delay.js

Index: src/debug-delay.js
===================================================================
--- src/debug-delay.js	(revision 1004)
+++ src/debug-delay.js	(working copy)
@@ -474,10 +474,18 @@
 
 Debug.setBreakPoint = function(func, opt_line, opt_column, opt_condition) {
   if (!IS_FUNCTION(func)) throw new Error('Parameters have wrong types.');
+  // Break points in API functions are not supported.
+  if (%FunctionIsAPIFunction(func)) {
+    throw new Error('Cannot set break point in native code.');
+  }
   var source_position = this.findFunctionSourcePosition(func, opt_line, opt_column) -
                         this.sourcePosition(func);
   // Find the script for the function.
   var script = %FunctionGetScript(func);
+  // Break in builtin JavaScript code is not supported.
+  if (script.type == Debug.ScriptType.Native) {
+    throw new Error('Cannot set break point in native code.');
+  }
   // If the script for the function has a name convert this to a script break
   // point.
   if (script && script.name) {
@@ -832,10 +840,16 @@
 };
 
 
+ExceptionEvent.prototype.exception = function() {
+  return this.exception_;
+}
+
+
 ExceptionEvent.prototype.uncaught = function() {
   return this.uncaught_;
 }
 
+
 ExceptionEvent.prototype.func = function() {
   return this.exec_state_.frame(0).func();
 };
@@ -1322,6 +1336,14 @@
   // Get the number of frames.
   var total_frames = this.exec_state_.frameCount();
 
+  // Create simple response if there are no frames.
+  if (total_frames == 0) {
+    response.body = {
+      totalFrames: total_frames
+    }
+    return;
+  }
+
   // Default frame range to include in backtrace.
   var from_index = 0
   var to_index = kDefaultBacktraceLength;