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

src/debug/arm/debug-arm.cc

Index: src/debug/arm/debug-arm.cc
diff --git a/src/debug/arm/debug-arm.cc b/src/debug/arm/debug-arm.cc
index 8477d97d35eab64751e5fdadf735cee388e345d6..2d4cbf13d76ddd145760f7be49d80f82a9bf344d 100644
--- a/src/debug/arm/debug-arm.cc
+++ b/src/debug/arm/debug-arm.cc
@@ -113,19 +113,7 @@ void DebugCodegen::GenerateDebugBreakStub(MacroAssembler* masm,
 }
 
 
-void DebugCodegen::GeneratePlainReturnLiveEdit(MacroAssembler* masm) {
-  __ Ret();
-}
-
-
 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
-  ExternalReference restarter_frame_function_slot =
-      ExternalReference::debug_restarter_frame_function_pointer_address(
-          masm->isolate());
-  __ mov(ip, Operand(restarter_frame_function_slot));
-  __ mov(r1, Operand::Zero());
-  __ str(r1, MemOperand(ip, 0));
-
   // Load the function pointer off of our current stack frame.
   __ ldr(r1, MemOperand(fp,
          StandardFrameConstants::kConstantPoolOffset - kPointerSize));
@@ -134,6 +122,9 @@ void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
   // FLAG_enable_embedded_constant_pool).
   __ LeaveFrame(StackFrame::INTERNAL);
 
+  ParameterCount dummy(0);
+  __ FloodFunctionIfStepping(r1, no_reg, dummy, dummy);
+
   { ConstantPoolUnavailableScope constant_pool_unavailable(masm);
     // Load context from the function.
     __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));