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

test/cctest/wasm/wasm-run-utils.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WASM_RUN_UTILS_H
 #define WASM_RUN_UTILS_H
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 73 matching lines @@
     module_.shared_isolate = CcTest::InitIsolateOnce();
     module = &module_;
     instance = &instance_;
     instance->module = &module_;
     instance->globals_start = global_data;
     instance->globals_size = kMaxGlobalsSize;
     instance->mem_start = nullptr;
     instance->mem_size = 0;
     instance->function_code = nullptr;
     linker = nullptr;
-    asm_js = false;
+    origin = kWasmOrigin;
     memset(global_data, 0, sizeof(global_data));
   }
 
   ~TestingModule() {
     if (instance->mem_start) {
       free(instance->mem_start);
     }
     if (instance->function_code) {
       delete instance->function_code;
     }
@@ skipping 522 matching lines @@
     if (p1 == MachineType::None()) return 1;
     if (p2 == MachineType::None()) return 2;
     if (p3 == MachineType::None()) return 3;
     return 4;
   }
 };
 
 }  // namespace
 
 #endif