Hide WasmModule.origin field behind readable accessors.

src/compiler/wasm-compiler.cc

Index: src/compiler/wasm-compiler.cc
diff --git a/src/compiler/wasm-compiler.cc b/src/compiler/wasm-compiler.cc
index 34d700ce688c198f0789a2385228993daed4ac05..594574b489a458581d5a90f96bb9a80a4465f31e 100644
--- a/src/compiler/wasm-compiler.cc
+++ b/src/compiler/wasm-compiler.cc
@@ -3967,7 +3967,7 @@ void WasmCompilationUnit::ExecuteCompilation() {
   }
   job_.reset(Pipeline::NewWasmCompilationJob(
       &info_, jsgraph_, descriptor, source_positions, &protected_instructions_,
-      module_env_->module->origin != wasm::kWasmOrigin));
+      !module_env_->module->is_wasm()));
   ok_ = job_->ExecuteJob() == CompilationJob::SUCCEEDED;
   // TODO(bradnelson): Improve histogram handling of size_t.
   // TODO(ahaas): The counters are not thread-safe at the moment.