Simplify isolates access during stack iteration (WAS: Move SafeStackFrameIterator::active_count_...)

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index dea94fabdd0f45067555d78cc92faa9dff4e333c..4d90c97aba2a2ba1f2ffcd108c0798919a353487 100755
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -367,11 +367,11 @@ static Handle<SharedFunctionInfo> MakeFunctionInfo(CompilationInfo* info) {
     // For eval scripts add information on the function from which eval was
     // called.
     if (info->is_eval()) {
-      StackTraceFrameIterator it;
+      StackTraceFrameIterator it(isolate);
       if (!it.done()) {
         script->set_eval_from_shared(
             JSFunction::cast(it.frame()->function())->shared());
-        Code* code = it.frame()->LookupCode(isolate);
+        Code* code = it.frame()->LookupCode();
         int offset = static_cast<int>(
             it.frame()->pc() - code->instruction_start());
         script->set_eval_from_instructions_offset(Smi::FromInt(offset));