[interpreter, debugger] support debug breaks via bytecode array copy

test/unittests/interpreter/bytecode-array-builder-unittest.cc

 // Copyright 2014 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/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-register-allocator.h"
 #include "test/unittests/test-utils.h"
@@ skipping 279 matching lines @@
     uint8_t code = the_array->get(i);
     scorecard[code] += 1;
     final_bytecode = Bytecodes::FromByte(code);
     i += Bytecodes::Size(Bytecodes::FromByte(code));
   }
 
   // Check return occurs at the end and only once in the BytecodeArray.
   CHECK_EQ(final_bytecode, Bytecode::kReturn);
   CHECK_EQ(scorecard[Bytecodes::ToByte(final_bytecode)], 1);
 
-#define CHECK_BYTECODE_PRESENT(Name, ...)     \
-  /* Check Bytecode is marked in scorecard */ \
-  CHECK_GE(scorecard[Bytecodes::ToByte(Bytecode::k##Name)], 1);
+#define CHECK_BYTECODE_PRESENT(Name, ...)                                \
+  /* Check Bytecode is marked in scorecard, unless it's a debug break */ \
+  if (!Bytecodes::IsDebugBreak(Bytecode::k##Name)) {                     \
+    CHECK_GE(scorecard[Bytecodes::ToByte(Bytecode::k##Name)], 1);        \
+  }
   BYTECODE_LIST(CHECK_BYTECODE_PRESENT)
 #undef CHECK_BYTECODE_PRESENT
 }
 
 
 TEST_F(BytecodeArrayBuilderTest, FrameSizesLookGood) {
   for (int locals = 0; locals < 5; locals++) {
     for (int contexts = 0; contexts < 4; contexts++) {
       for (int temps = 0; temps < 3; temps++) {
         BytecodeArrayBuilder builder(isolate(), zone(), 0, contexts, locals);
@@ skipping 333 matching lines @@
     iterator.Advance();
   }
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8