Revert of [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 2d4cbf13d76ddd145760f7be49d80f82a9bf344d..8477d97d35eab64751e5fdadf735cee388e345d6 100644
--- a/src/debug/arm/debug-arm.cc
+++ b/src/debug/arm/debug-arm.cc
@@ -113,7 +113,19 @@
 }
 
 
+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));
@@ -121,9 +133,6 @@
   // Pop return address, frame and constant pool pointer (if
   // 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.