PredictableCodeSizeScope checks the expected size now.

src/arm/code-stubs-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 7531 matching lines @@
   __ StoreNumberToDoubleElements(r0, r3,
                                  // Overwrites all regs after this.
                                  r5, r6, r7, r9, r2,
                                  &slow_elements);
   __ Ret();
 }
 
 
 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
   if (entry_hook_ != NULL) {
-    PredictableCodeSizeScope predictable(masm);
+    PredictableCodeSizeScope predictable(masm, 4 * Assembler::kInstrSize);
     ProfileEntryHookStub stub;
     __ push(lr);
     __ CallStub(&stub);
     __ pop(lr);
   }
 }
 
 
 void ProfileEntryHookStub::Generate(MacroAssembler* masm) {
   // The entry hook is a "push lr" instruction, followed by a call.
@@ skipping 41 matching lines @@
 
   __ Pop(lr, r5, r1);
   __ Ret();
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM