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

Source/core/html/forms/RangeInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 110 matching lines @@
 }
 
 StepRange RangeInputType::createStepRange(AnyStepHandling anyStepHandling) const
 {
     DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (rangeDefaultStep, rangeDefaultStepBase, rangeStepScaleFactor));
 
     const Decimal stepBase = findStepBase(rangeDefaultStepBase);
     const Decimal minimum = parseToNumber(element().fastGetAttribute(minAttr), rangeDefaultMinimum);
     const Decimal maximum = ensureMaximum(parseToNumber(element().fastGetAttribute(maxAttr), rangeDefaultMaximum), minimum, rangeDefaultMaximum);
 
-    const AtomicString& precisionValue = element().fastGetAttribute(precisionAttr);
-    if (!precisionValue.isNull()) {
-        const Decimal step = equalIgnoringCase(precisionValue, "float") ? Decimal::nan() : 1;
-        return StepRange(stepBase, minimum, maximum, step, stepDescription);
-    }
-
     const Decimal step = StepRange::parseStep(anyStepHandling, stepDescription, element().fastGetAttribute(stepAttr));
     return StepRange(stepBase, minimum, maximum, step, stepDescription);
 }
 
 bool RangeInputType::isSteppable() const
 {
     return true;
 }
 
 void RangeInputType::handleMouseDownEvent(MouseEvent* event)
@@ skipping 247 matching lines @@
             right = middle;
     }
     const Decimal closestLeft = middle ? m_tickMarkValues[middle - 1] : Decimal::infinity(Decimal::Negative);
     const Decimal closestRight = middle != m_tickMarkValues.size() ? m_tickMarkValues[middle] : Decimal::infinity(Decimal::Positive);
     if (closestRight - value < value - closestLeft)
         return closestRight;
     return closestLeft;
 }
 
 } // namespace WebCore