Move interpreter cctests into v8::internal::interpreter namespace.

test/cctest/interpreter/test-interpreter.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 "src/v8.h"
 
 #include "src/execution.h"
 #include "src/handles.h"
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/interpreter.h"
@@ skipping 137 matching lines @@
     if (!feedback_vector_.is_null()) {
       function->shared()->set_feedback_vector(
           *feedback_vector_.ToHandleChecked());
     }
     return function;
   }
 
   DISALLOW_COPY_AND_ASSIGN(InterpreterTester);
 };
 
-}  // namespace interpreter
-}  // namespace internal
-}  // namespace v8
-
-using v8::internal::BytecodeArray;
-using v8::internal::Handle;
-using v8::internal::LanguageMode;
-using v8::internal::Object;
-using v8::internal::Runtime;
-using v8::internal::Smi;
-using v8::internal::Strength;
-using v8::internal::Token;
-using namespace v8::internal::interpreter;
 
 TEST(InterpreterReturn) {
   HandleAndZoneScope handles;
   Handle<Object> undefined_value =
       handles.main_isolate()->factory()->undefined_value();
 
   BytecodeArrayBuilder builder(handles.main_isolate(), handles.main_zone());
   builder.set_locals_count(0);
   builder.set_context_count(0);
   builder.set_parameter_count(1);
@@ skipping 2536 matching lines @@
        "  }",
        0}};
 
   for (size_t i = 0; i < arraysize(for_in_samples); i++) {
     InterpreterTester tester(handles.main_isolate(), for_in_samples[i].first);
     auto callable = tester.GetCallable<>();
     Handle<Object> return_val = callable().ToHandleChecked();
     CHECK_EQ(Handle<Smi>::cast(return_val)->value(), for_in_samples[i].second);
   }
 }
+
+}  // namespace interpreter
+}  // namespace internal
+}  // namespace v8