[wasm] Properly plumb the origin of the WASM module from asm.js translation.

test/unittests/wasm/module-decoder-unittest.cc

Index: test/unittests/wasm/module-decoder-unittest.cc
diff --git a/test/unittests/wasm/module-decoder-unittest.cc b/test/unittests/wasm/module-decoder-unittest.cc
index b237a070dc9306d7affcb15c62a7f4f11a227589..42353b8f8f36ba5e7b6b607252c4dfdbd5a1af25 100644
--- a/test/unittests/wasm/module-decoder-unittest.cc
+++ b/test/unittests/wasm/module-decoder-unittest.cc
@@ -30,7 +30,7 @@ class WasmModuleVerifyTest : public TestWithZone {
  public:
   ModuleResult DecodeModule(const byte* module_start, const byte* module_end) {
     return DecodeWasmModule(nullptr, zone(), module_start, module_end, false,
-                            false);
+                            kWasmOrigin);
   }
 };