[turbofan] Remove virtual methods from CodeAssembler.

test/unittests/interpreter/interpreter-assembler-unittest.h

 // 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.
 
 #ifndef V8_UNITTESTS_INTERPRETER_INTERPRETER_ASSEMBLER_UNITTEST_H_
 #define V8_UNITTESTS_INTERPRETER_INTERPRETER_ASSEMBLER_UNITTEST_H_
 
 #include "src/compiler/code-assembler.h"
 #include "src/compiler/machine-operator.h"
 #include "src/interpreter/interpreter-assembler.h"
@@ skipping 18 matching lines @@
  public:
   InterpreterAssemblerTest() {}
   ~InterpreterAssemblerTest() override {}
 
   class InterpreterAssemblerForTest final : public InterpreterAssembler {
    public:
     InterpreterAssemblerForTest(
         InterpreterAssemblerTestState* state, Bytecode bytecode,
         OperandScale operand_scale = OperandScale::kSingle)
         : InterpreterAssembler(state, bytecode, operand_scale) {}
-    ~InterpreterAssemblerForTest() override;
+    ~InterpreterAssemblerForTest();
 
     Matcher<compiler::Node*> IsLoad(
         const Matcher<compiler::LoadRepresentation>& rep_matcher,
         const Matcher<compiler::Node*>& base_matcher,
         const Matcher<compiler::Node*>& index_matcher);
     Matcher<compiler::Node*> IsStore(
         const Matcher<compiler::StoreRepresentation>& rep_matcher,
         const Matcher<compiler::Node*>& base_matcher,
         const Matcher<compiler::Node*>& index_matcher,
         const Matcher<compiler::Node*>& value_matcher);
@@ skipping 13 matching lines @@
    private:
     DISALLOW_COPY_AND_ASSIGN(InterpreterAssemblerForTest);
   };
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UNITTESTS_INTERPRETER_INTERPRETER_ASSEMBLER_UNITTEST_H_