Hooking up asm-wasm conversion.

src/typing-asm.h

Index: src/typing-asm.h
diff --git a/src/typing-asm.h b/src/typing-asm.h
index 09eacaa0ae07717e0336916d71986ce99f2dd88a..78ed66a16d6591fb62080d984e39d6ea1a286aab 100644
--- a/src/typing-asm.h
+++ b/src/typing-asm.h
@@ -24,6 +24,7 @@ class AsmTyper : public AstVisitor {
                     FunctionLiteral* root);
   bool Validate();
   void set_allow_simd(bool simd) { allow_simd_ = simd; }
+  void set_fixed_signature(bool fixed) { fixed_signature_ = fixed; }
   const char* error_message() { return error_message_; }
   const AstTypeBounds* bounds() { return &bounds_; }
 
@@ -71,6 +72,7 @@ class AsmTyper : public AstVisitor {
   FunctionLiteral* root_;
   bool valid_;
   bool allow_simd_;
+  bool fixed_signature_;
 
   struct VariableInfo : public ZoneObject {
     Type* type;