[Interpreter] Avoid accessing Isolate from during bytecode generation.

src/ast/scopes.h

Index: src/ast/scopes.h
diff --git a/src/ast/scopes.h b/src/ast/scopes.h
index dd65d48c4a14c4e234e958c8ddc8c1a78648fdf0..97849b7ea011cb62fc48cf410d85acf753f2b2b2 100644
--- a/src/ast/scopes.h
+++ b/src/ast/scopes.h
@@ -427,6 +427,12 @@ class Scope: public ZoneObject {
 
   int num_var() const { return variables_.occupancy(); }
 
+  // GetScopeInfo() must have been called once to create the ScopeInfo.
+  Handle<ScopeInfo> scope_info() {

[Michael Starzinger, 2016/08/16 09:10:21]

nit: Can we move this to below the declration of "GetScopeInfo" so that the two
are grouped together?

[rmcilroy, 2016/08/16 11:24:54]

Done.

+    DCHECK(!scope_info_.is_null());
+    return scope_info_;
+  }
+
   // ---------------------------------------------------------------------------
   // Debugging.