[interpreter, debugger] implement debugger statement.

src/interpreter/bytecode-array-builder.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/interpreter/bytecode-array-builder.h"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
@@ skipping 971 matching lines @@
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::Return() {
   Output(Bytecode::kReturn);
   exit_seen_in_block_ = true;
   return *this;
 }
 
+BytecodeArrayBuilder& BytecodeArrayBuilder::Debugger() {
+  Output(Bytecode::kDebugger);
+  return *this;
+}
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInPrepare(
     Register cache_info_triple) {
   if (FitsInReg8Operand(cache_info_triple)) {
     Output(Bytecode::kForInPrepare, cache_info_triple.ToRawOperand());
   } else if (FitsInReg16Operand(cache_info_triple)) {
     Output(Bytecode::kForInPrepareWide, cache_info_triple.ToRawOperand());
   } else {
     UNIMPLEMENTED();
   }
@@ skipping 677 matching lines @@
 }
 
 // static
 bool BytecodeArrayBuilder::FitsInReg16OperandUntranslated(Register value) {
   return value.is_short_operand();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8