Cleanup: we are not patching entries any longer

runtime/vm/code_patcher.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/code_patcher.h"
 #include "vm/cpu.h"
 #include "vm/instructions.h"
 #include "vm/object.h"
 #include "vm/virtual_memory.h"
 
@@ skipping 16 matching lines @@
 
 WritableInstructionsScope::~WritableInstructionsScope() {
   if (FLAG_write_protect_code) {
     bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_),
                                          size_,
                                          VirtualMemory::kReadExecute);
     ASSERT(status);
   }
 }
 
-
-// The patch code buffer contains the jmp code which will be inserted at
-// entry point.
-void CodePatcher::PatchEntry(const Code& code, const Code& new_code) {
-  ASSERT(code.instructions() == code.active_instructions());
-  code.set_active_instructions(new_code.instructions());
-}
-
-
-// The entry point is a jmp instruction, the patch code buffer contains
-// original code, the entry point contains the jump instruction.
-void CodePatcher::RestoreEntry(const Code& code) {
-  if (!IsEntryPatched(code)) return;
-  ASSERT(code.instructions() != code.active_instructions());
-  code.set_active_instructions(code.instructions());
-}
-
-
-bool CodePatcher::IsEntryPatched(const Code& code) {
-  return code.instructions() != code.active_instructions();
-}
-
 }  // namespace dart