Use correct call size for PredictableCodeSizeScopes.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 4ea2942f4df3b5690ef784ca6fc578b12738d74c..ba5053f95ab8e1618f70b104bb9aa884f1abb2a8 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -128,8 +128,10 @@ static void EmitStackCheck(MacroAssembler* masm_,
   __ LoadRoot(stack_limit_scratch, index);
   __ cmp(scratch, Operand(stack_limit_scratch));
   __ b(hs, &ok);
-  PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize);
-  __ Call(isolate->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
+  Handle<Code> stack_check = isolate->builtins()->StackCheck();
+  PredictableCodeSizeScope predictable(masm_,
+      masm_->CallSize(stack_check, RelocInfo::CODE_TARGET));
+  __ Call(stack_check, RelocInfo::CODE_TARGET);
   __ bind(&ok);
 }