Add asm.js stdlib portion implementable as wasm opcodes.

src/wasm/asm-wasm-builder.h

Index: src/wasm/asm-wasm-builder.h
diff --git a/src/wasm/asm-wasm-builder.h b/src/wasm/asm-wasm-builder.h
index 9b761f9040808f88e578c908572f2fea99077e13..09645ee3c412d456db0f508aabef03af9ef59bee 100644
--- a/src/wasm/asm-wasm-builder.h
+++ b/src/wasm/asm-wasm-builder.h
@@ -7,6 +7,7 @@
 
 #include "src/allocation.h"
 #include "src/objects.h"
+#include "src/typing-asm.h"
 #include "src/wasm/encoder.h"
 #include "src/zone.h"
 
@@ -20,7 +21,7 @@ namespace wasm {
 class AsmWasmBuilder {
  public:
   explicit AsmWasmBuilder(Isolate* isolate, Zone* zone, FunctionLiteral* root,
-                          Handle<Object> foreign);
+                          Handle<Object> foreign, AsmTyper* typer);
   WasmModuleIndex* Run();
 
  private:
@@ -28,6 +29,7 @@ class AsmWasmBuilder {
   Zone* zone_;
   FunctionLiteral* literal_;
   Handle<Object> foreign_;
+  AsmTyper* typer_;
 };
 }  // namespace wasm
 }  // namespace internal