Refactor code generation for global declarations.

src/full-codegen.h

Index: src/full-codegen.h
diff --git a/src/full-codegen.h b/src/full-codegen.h
index ead99586f7edd0dff3d68ad3efebf25a8aea9865..a25c94f4b7ceb8d04a8244a9b740dba4c436544a 100644
--- a/src/full-codegen.h
+++ b/src/full-codegen.h
@@ -83,7 +83,7 @@ class FullCodeGenerator: public AstVisitor {
         scope_(info->scope()),
         nesting_stack_(NULL),
         loop_depth_(0),
-        global_count_(0),
+        globals_(10),
         context_(NULL),
         bailout_entries_(info->HasDeoptimizationSupport()
                          ? info->function()->ast_node_count() : 0),
@@ -781,7 +781,7 @@ class FullCodeGenerator: public AstVisitor {
   Label return_label_;
   NestedStatement* nesting_stack_;
   int loop_depth_;
-  int global_count_;
+  ZoneList<Handle<Object> > globals_;
   const ExpressionContext* context_;
   ZoneList<BailoutEntry> bailout_entries_;
   ZoneList<BailoutEntry> stack_checks_;