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

src/debug/debug.h

Index: src/debug/debug.h
diff --git a/src/debug/debug.h b/src/debug/debug.h
index 78b31352a7f553daff35edc3575ec65a85a35f0c..77451f679818efdaba1b6393ac78ce7c254fc42d 100644
--- a/src/debug/debug.h
+++ b/src/debug/debug.h
@@ -455,8 +455,7 @@ class Debug {
 
   // Support for LiveEdit
   void FramesHaveBeenDropped(StackFrame::Id new_break_frame_id,
-                             LiveEdit::FrameDropMode mode,
-                             Object** restarter_frame_function_pointer);
+                             LiveEdit::FrameDropMode mode);
 
   // Threading support.
   char* ArchiveDebug(char* to);
@@ -503,11 +502,6 @@ class Debug {
     return reinterpret_cast<Address>(&after_break_target_);
   }
 
-  Address restarter_frame_function_pointer_address() {
-    Object*** address = &thread_local_.restarter_frame_function_pointer_;
-    return reinterpret_cast<Address>(address);
-  }
-
   Address step_in_enabled_address() {
     return reinterpret_cast<Address>(&thread_local_.step_in_enabled_);
   }
@@ -656,11 +650,6 @@ class Debug {
     // Stores the way how LiveEdit has patched the stack. It is used when
     // debugger returns control back to user script.
     LiveEdit::FrameDropMode frame_drop_mode_;
-
-    // When restarter frame is on stack, stores the address
-    // of the pointer to function being restarted. Otherwise (most of the time)
-    // stores NULL. This pointer is used with 'step in' implementation.
-    Object** restarter_frame_function_pointer_;
   };
 
   // Storage location for registers when handling debug break calls
@@ -757,8 +746,6 @@ class DebugCodegen : public AllStatic {
   static void GenerateDebugBreakStub(MacroAssembler* masm,
                                      DebugBreakCallHelperMode mode);
 
-  static void GeneratePlainReturnLiveEdit(MacroAssembler* masm);
-
   // FrameDropper is a code replacement for a JavaScript frame with possibly
   // several frames above.
   // There is no calling conventions here, because it never actually gets