Add number() static methods to AtomicString class

Source/core/html/HTMLMeterElement.cpp

Index: Source/core/html/HTMLMeterElement.cpp
diff --git a/Source/core/html/HTMLMeterElement.cpp b/Source/core/html/HTMLMeterElement.cpp
index 63b3c9c7ee70963db1c559def1cad349c396a0bb..4efb9d0d317d8546299b06148516d764288bc1be 100644
--- a/Source/core/html/HTMLMeterElement.cpp
+++ b/Source/core/html/HTMLMeterElement.cpp
@@ -81,7 +81,7 @@ void HTMLMeterElement::setMin(double min, ExceptionState& exceptionState)
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return;
     }
-    setAttribute(minAttr, String::number(min));
+    setAttribute(minAttr, AtomicString::number(min));
 }
 
 double HTMLMeterElement::max() const
@@ -95,7 +95,7 @@ void HTMLMeterElement::setMax(double max, ExceptionState& exceptionState)
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return;
     }
-    setAttribute(maxAttr, String::number(max));
+    setAttribute(maxAttr, AtomicString::number(max));
 }
 
 double HTMLMeterElement::value() const
@@ -110,7 +110,7 @@ void HTMLMeterElement::setValue(double value, ExceptionState& exceptionState)
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return;
     }
-    setAttribute(valueAttr, String::number(value));
+    setAttribute(valueAttr, AtomicString::number(value));
 }
 
 double HTMLMeterElement::low() const
@@ -125,7 +125,7 @@ void HTMLMeterElement::setLow(double low, ExceptionState& exceptionState)
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return;
     }
-    setAttribute(lowAttr, String::number(low));
+    setAttribute(lowAttr, AtomicString::number(low));
 }
 
 double HTMLMeterElement::high() const
@@ -140,7 +140,7 @@ void HTMLMeterElement::setHigh(double high, ExceptionState& exceptionState)
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return;
     }
-    setAttribute(highAttr, String::number(high));
+    setAttribute(highAttr, AtomicString::number(high));
 }
 
 double HTMLMeterElement::optimum() const
@@ -155,7 +155,7 @@ void HTMLMeterElement::setOptimum(double optimum, ExceptionState& exceptionState
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return;
     }
-    setAttribute(optimumAttr, String::number(optimum));
+    setAttribute(optimumAttr, AtomicString::number(optimum));
 }
 
 HTMLMeterElement::GaugeRegion HTMLMeterElement::gaugeRegion() const