[Isolates] Merge crankshaft (r5922 from bleeding_edge).

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index df9b8426f0b87368d4cc80d8dc594dbd2d0c6266..412410ee4c8fea25678b7bec61ceca7ffb38e966 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -904,11 +904,12 @@ function FormatStackTrace(error, frames) {
 
 function FormatRawStackTrace(error, raw_stack) {
   var frames = [ ];
-  for (var i = 0; i < raw_stack.length; i += 3) {
+  for (var i = 0; i < raw_stack.length; i += 4) {
     var recv = raw_stack[i];
-    var fun = raw_stack[i+1];
-    var pc = raw_stack[i+2];
-    var pos = %FunctionGetPositionForOffset(fun, pc);
+    var fun = raw_stack[i + 1];
+    var code = raw_stack[i + 2];
+    var pc = raw_stack[i + 3];
+    var pos = %FunctionGetPositionForOffset(code, pc);
     frames.push(new CallSite(recv, fun, pos));
   }
   if (IS_FUNCTION($Error.prepareStackTrace)) {