Remove the precision="float" attribute on <input type="range">

Source/core/html/HTMLInputElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
@@ skipping 682 matching lines @@
     } else if (name == multipleAttr) {
         m_inputTypeView->multipleAttributeChanged();
         setNeedsValidityCheck();
     } else if (name == stepAttr) {
         m_inputTypeView->stepAttributeChanged();
         setNeedsValidityCheck();
         UseCounter::count(document(), UseCounter::StepAttribute);
     } else if (name == patternAttr) {
         setNeedsValidityCheck();
         UseCounter::count(document(), UseCounter::PatternAttribute);
-    } else if (name == precisionAttr) {
-        setNeedsValidityCheck();
-        UseCounter::count(document(), UseCounter::PrecisionAttribute);
     } else if (name == disabledAttr) {
         HTMLTextFormControlElement::parseAttribute(name, value);
         m_inputTypeView->disabledAttributeChanged();
     } else if (name == readonlyAttr) {
         HTMLTextFormControlElement::parseAttribute(name, value);
         m_inputTypeView->readonlyAttributeChanged();
     } else if (name == listAttr) {
         m_hasNonEmptyList = !value.isEmpty();
         if (m_hasNonEmptyList) {
             resetListAttributeTargetObserver();
@@ skipping 1160 matching lines @@
     return m_inputTypeView->customStyleForRenderer(originalStyleForRenderer());
 }
 #endif
 
 bool HTMLInputElement::shouldDispatchFormControlChangeEvent(String& oldValue, String& newValue)
 {
     return m_inputType->shouldDispatchFormControlChangeEvent(oldValue, newValue);
 }
 
 } // namespace