Separate Scope into DeclarationScope and Scope

src/asmjs/asm-typer.cc

Index: src/asmjs/asm-typer.cc
diff --git a/src/asmjs/asm-typer.cc b/src/asmjs/asm-typer.cc
index 80f296052f16279531c4b42b67820cd3e12241db..999668fcdb50b17ee581580f7c99edd7f3347187 100644
--- a/src/asmjs/asm-typer.cc
+++ b/src/asmjs/asm-typer.cc
@@ -551,7 +551,7 @@ class SourceLayoutTracker {
 AsmType* AsmTyper::ValidateModule(FunctionLiteral* fun) {
   SourceLayoutTracker source_layout;
 
-  Scope* scope = fun->scope();
+  DeclarationScope* scope = fun->scope();
   if (!scope->is_function_scope()) FAIL(fun, "Not at function scope.");
   if (!ValidAsmIdentifier(fun->name()))
     FAIL(fun, "Invalid asm.js identifier in module name.");