third_party/WebKit: fix typos found in comments

third_party/WebKit/Source/core/html/shadow/DateTimeFieldElement.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 189 matching lines @@
 }
 
 float DateTimeFieldElement::maximumWidth(const ComputedStyle&)
 {
     const float paddingLeftAndRight = 2; // This should match to html.css.
     return paddingLeftAndRight;
 }
 
 void DateTimeFieldElement::setDisabled()
 {
-    // Set HTML attribute disabled to change apperance.
+    // Set HTML attribute disabled to change appearance.
     setBooleanAttribute(disabledAttr, true);
     setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::createWithExtraData(StyleChangeReason::PseudoClass, StyleChangeExtraData::Disabled));
 }
 
 bool DateTimeFieldElement::supportsFocus() const
 {
     return !isDisabled() && !isFieldOwnerDisabled();
 }
 
 void DateTimeFieldElement::updateVisibleValue(EventBehavior eventBehavior)
@@ skipping 19 matching lines @@
 }
 
 int DateTimeFieldElement::valueForARIAValueNow() const
 {
     return valueAsInteger();
 }
 
 } // namespace blink
 
 #endif