[debugger] do not predict step in target for liveedit.

src/debug/ia32/debug-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/codegen.h"
 #include "src/debug/debug.h"
 #include "src/ia32/frames-ia32.h"
 
@@ skipping 87 matching lines @@
 
   // Now that the break point has been handled, resume normal execution by
   // jumping to the target address intended by the caller and that was
   // overwritten by the address of DebugBreakXXX.
   ExternalReference after_break_target =
       ExternalReference::debug_after_break_target_address(masm->isolate());
   __ jmp(Operand::StaticVariable(after_break_target));
 }
 
 
-void DebugCodegen::GeneratePlainReturnLiveEdit(MacroAssembler* masm) {
-  masm->ret(0);
-}
-
-
 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
-  ExternalReference restarter_frame_function_slot =
-      ExternalReference::debug_restarter_frame_function_pointer_address(
-          masm->isolate());
-  __ mov(Operand::StaticVariable(restarter_frame_function_slot), Immediate(0));
-
   // We do not know our frame height, but set esp based on ebp.
   __ lea(esp, Operand(ebp, -1 * kPointerSize));
 
   __ pop(edi);  // Function.
   __ pop(ebp);
 
+  ParameterCount dummy(0);
+  __ FloodFunctionIfStepping(edi, no_reg, dummy, dummy);
+
   // Load context from the function.
   __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
 
   // Clear new.target register as a safety measure.
   __ mov(edx, masm->isolate()->factory()->undefined_value());
 
   // Get function code.
   __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
   __ mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kCodeOffset));
   __ lea(ebx, FieldOperand(ebx, Code::kHeaderSize));
 
   // Re-run JSFunction, edi is function, esi is context.
   __ jmp(ebx);
 }
 
 
 const bool LiveEdit::kFrameDropperSupported = true;
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32