[debugger] remove debugger statement support from FCG/CS.

src/ia32/macro-assembler-ia32.cc

 // Copyright 2012 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.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 655 matching lines @@
   // Restore caller-saved registers.
   PopCallerSaved(kDontSaveFPRegs, js_function, code_entry);
 
   // Restore input registers.
   pop(code_entry);
   pop(js_function);
 
   bind(&done);
 }
 
-void MacroAssembler::DebugBreak() {
-  Move(eax, Immediate(0));
-  mov(ebx, Immediate(ExternalReference(Runtime::kHandleDebuggerStatement,
-                                       isolate())));
-  CEntryStub ces(isolate(), 1);
-  call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT);
-}
-
 void MacroAssembler::MaybeDropFrames() {
   // Check whether we need to drop frames to restart a function on the stack.
   ExternalReference restart_fp =
       ExternalReference::debug_restart_fp_address(isolate());
   mov(ebx, Operand::StaticVariable(restart_fp));
   test(ebx, ebx);
   j(not_zero, isolate()->builtins()->FrameDropperTrampoline(),
     RelocInfo::CODE_TARGET);
 }
 
@@ skipping 2237 matching lines @@
   mov(eax, dividend);
   shr(eax, 31);
   add(edx, eax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32