[Isolates] Merge 6700:7030 from bleeding_edge to isolates.

src/execution.cc

Index: src/execution.cc
===================================================================
--- src/execution.cc	(revision 7006)
+++ src/execution.cc	(working copy)
@@ -131,6 +131,11 @@
   ASSERT(*has_pending_exception == Isolate::Current()->has_pending_exception());
   if (*has_pending_exception) {
     isolate->ReportPendingMessages();
+    if (isolate->pending_exception() == Failure::OutOfMemoryException()) {
+      if (!isolate->handle_scope_implementer()->ignore_out_of_memory()) {
+        V8::FatalProcessOutOfMemory("JS", true);
+      }
+    }
     return Handle<Object>();
   } else {
     isolate->clear_pending_message();
@@ -425,6 +430,7 @@
   if (real_climit_ == kIllegalLimit) {
     // Takes the address of the limit variable in order to find out where
     // the top of stack is right now.
+    const uintptr_t kLimitSize = FLAG_stack_size * KB;
     uintptr_t limit = reinterpret_cast<uintptr_t>(&limit) - kLimitSize;
     ASSERT(reinterpret_cast<uintptr_t>(&limit) > kLimitSize);
     real_jslimit_ = SimulatorStack::JsLimitFromCLimit(limit);