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 129bf99997d7665feea4182bea9a71e01ab6fcbb..c29c20a4a27d4e2823ee8bc1de7bd23960a567fe 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;