[wasm] Several unrelated cleanups

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index 2255b812b71265219c2aa5b38c3b86df265e2342..c19e7555bc9fc040e1e8609ecd558ee0af246abf 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -1274,7 +1274,7 @@ class BuiltinFrame final : public JavaScriptFrame {
   friend class StackFrameIteratorBase;
 };
 
-class WasmCompiledFrame : public StandardFrame {
+class WasmCompiledFrame final : public StandardFrame {
  public:
   Type type() const override { return WASM_COMPILED; }
 
@@ -1316,7 +1316,7 @@ class WasmCompiledFrame : public StandardFrame {
   friend class StackFrameIteratorBase;
 };
 
-class WasmInterpreterEntryFrame : public StandardFrame {
+class WasmInterpreterEntryFrame final : public StandardFrame {
  public:
   Type type() const override { return WASM_INTERPRETER_ENTRY; }