Make InputType and InputTypeView RefCounted.

Source/core/html/NumberInputType.cpp

Index: Source/core/html/NumberInputType.cpp
diff --git a/Source/core/html/NumberInputType.cpp b/Source/core/html/NumberInputType.cpp
index ad93f177458d7ac792db637ccadd7f56e6abbfe6..8778db7eeca98845d28c1c31cd5f9c7104682b23 100644
--- a/Source/core/html/NumberInputType.cpp
+++ b/Source/core/html/NumberInputType.cpp
@@ -95,9 +95,9 @@ static RealNumberRenderSize calculateRenderSize(const Decimal& value)
     return RealNumberRenderSize(sizeOfSign + sizeOfZero , numberOfZeroAfterDecimalPoint + sizeOfDigits);
 }
 
-PassOwnPtr<InputType> NumberInputType::create(HTMLInputElement* element)
+PassRefPtr<InputType> NumberInputType::create(HTMLInputElement* element)
 {
-    return adoptPtr(new NumberInputType(element));
+    return adoptRef(new NumberInputType(element));
 }
 
 void NumberInputType::countUsage()