[Interpreter] Make InterpreterAssembler a subclass of CodeStubAssembler.

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_COMPILER_INTERPRETER_ASSEMBLER_UNITTEST_H_
-#define V8_UNITTESTS_COMPILER_INTERPRETER_ASSEMBLER_UNITTEST_H_
+#ifndef V8_UNITTESTS_INTERPRETER_INTERPRETER_ASSEMBLER_UNITTEST_H_
+#define V8_UNITTESTS_INTERPRETER_INTERPRETER_ASSEMBLER_UNITTEST_H_
 
-#include "src/compiler/interpreter-assembler.h"
-#include "src/compiler/linkage.h"
 #include "src/compiler/machine-operator.h"
+#include "src/interpreter/interpreter-assembler.h"
 #include "test/unittests/test-utils.h"
 #include "testing/gmock-support.h"
 
 namespace v8 {
 namespace internal {
-namespace compiler {
+namespace interpreter {
 
 using ::testing::Matcher;
 
 class InterpreterAssemblerTest : public TestWithIsolateAndZone {
  public:
   InterpreterAssemblerTest() {}
   ~InterpreterAssemblerTest() override {}
 
   class InterpreterAssemblerForTest final : public InterpreterAssembler {
    public:
     InterpreterAssemblerForTest(InterpreterAssemblerTest* test,
-                                interpreter::Bytecode bytecode)
+                                Bytecode bytecode)
         : InterpreterAssembler(test->isolate(), test->zone(), bytecode) {}
     ~InterpreterAssemblerForTest() override {}
 
-    Matcher<Node*> IsLoad(const Matcher<LoadRepresentation>& rep_matcher,
-                          const Matcher<Node*>& base_matcher,
-                          const Matcher<Node*>& index_matcher);
-    Matcher<Node*> IsStore(const Matcher<StoreRepresentation>& rep_matcher,
-                           const Matcher<Node*>& base_matcher,
-                           const Matcher<Node*>& index_matcher,
-                           const Matcher<Node*>& value_matcher);
+    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);
 
-    Matcher<Node*> IsBytecodeOperand(int offset);
-    Matcher<Node*> IsBytecodeOperandSignExtended(int offset);
-    Matcher<Node*> IsBytecodeOperandShort(int offset);
-    Matcher<Node*> IsBytecodeOperandShortSignExtended(int offset);
+    Matcher<compiler::Node*> IsBytecodeOperand(int offset);
+    Matcher<compiler::Node*> IsBytecodeOperandSignExtended(int offset);
+    Matcher<compiler::Node*> IsBytecodeOperandShort(int offset);
+    Matcher<compiler::Node*> IsBytecodeOperandShortSignExtended(int offset);
 
-    using InterpreterAssembler::call_descriptor;
     using InterpreterAssembler::graph;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(InterpreterAssemblerForTest);
   };
 };
 
-}  // namespace compiler
+}  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_UNITTESTS_COMPILER_INTERPRETER_ASSEMBLER_UNITTEST_H_
+#endif  // V8_UNITTESTS_INTERPRETER_INTERPRETER_ASSEMBLER_UNITTEST_H_