Hide WasmModule.origin field behind readable accessors.

test/unittests/wasm/function-body-decoder-unittest.cc

 // Copyright 2015 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.
 
 #include "test/unittests/test-utils.h"
 
 #include "src/v8.h"
 
 #include "test/common/wasm/test-signatures.h"
 
@@ skipping 193 matching lines @@
   }
 };
 
 namespace {
 // A helper for tests that require a module environment for functions,
 // globals, or memories.
 class TestModuleEnv : public ModuleEnv {
  public:
   explicit TestModuleEnv(ModuleOrigin origin = kWasmOrigin)
       : ModuleEnv(&mod, nullptr) {
-    mod.origin = origin;
+    mod.set_origin(origin);
   }
   byte AddGlobal(ValueType type, bool mutability = true) {
     mod.globals.push_back({type, mutability, WasmInitExpr(), 0, false, false});
     CHECK(mod.globals.size() <= 127);
     return static_cast<byte>(mod.globals.size() - 1);
   }
   byte AddSignature(FunctionSig* sig) {
     mod.signatures.push_back(sig);
     CHECK(mod.signatures.size() <= 127);
     return static_cast<byte>(mod.signatures.size() - 1);
@@ skipping 2585 matching lines @@
   iter.next();
   EXPECT_TRUE(iter.has_next());
   EXPECT_EQ(kExprI32Const, iter.current());
   iter.next();
   EXPECT_FALSE(iter.has_next());
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8