[compiler] Remove compiler internals from CodeAssembler.

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

Index: test/unittests/interpreter/interpreter-assembler-unittest.h
diff --git a/test/unittests/interpreter/interpreter-assembler-unittest.h b/test/unittests/interpreter/interpreter-assembler-unittest.h
index 1ebdc77c180c5a66c0003f3fdff8aeae0c194fd8..e3e525273a983a85a8ba0a75d490837dba6a7b0e 100644
--- a/test/unittests/interpreter/interpreter-assembler-unittest.h
+++ b/test/unittests/interpreter/interpreter-assembler-unittest.h
@@ -52,8 +52,6 @@ class InterpreterAssemblerTest : public TestWithIsolateAndZone {
     Matcher<compiler::Node*> IsUnsignedOperand(int offset,
                                                OperandSize operand_size);
 
-    using InterpreterAssembler::graph;
-
    private:
     DISALLOW_COPY_AND_ASSIGN(InterpreterAssemblerForTest);
   };