Extract platform independent part of RevertStackCheckCode.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index 6c3754cc852880c1c1e6ee3cc914d00f711c85db..de5e57f8eb21e1814a7af2b141ea97d12a2374bf 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -136,9 +136,9 @@ class Deoptimizer : public Malloced {
 
   // Patch stack guard check at instruction before pc_after in
   // the unoptimized code to unconditionally call replacement_code.
-  static void PatchStackCheckAt(Address pc_after,
-                                Code* check_code,
-                                Code* replacement_code);
+  static void PatchStackCheckCodeAt(Address pc_after,
+                                    Code* check_code,
+                                    Code* replacement_code);
 
   // Change all patched stack guard checks in the unoptimized code
   // back to a normal stack guard check.
@@ -146,6 +146,12 @@ class Deoptimizer : public Malloced {
                                    Code* check_code,
                                    Code* replacement_code);
 
+  // Change all patched stack guard checks in the unoptimized code
+  // back to a normal stack guard check.
+  static void RevertStackCheckCodeAt(Address pc_after,
+                                     Code* check_code,
+                                     Code* replacement_code);
+
   ~Deoptimizer();
 
   void InsertHeapNumberValues(int index, JavaScriptFrame* frame);