Separate WebIDBKey type into separate header

Source/web/WebIDBKeyPath.cpp

Index: Source/web/WebIDBKeyPath.cpp
diff --git a/Source/web/WebIDBKeyPath.cpp b/Source/web/WebIDBKeyPath.cpp
index 7263c68b05314bbc15ab1d11c2ebe016be3b57bf..ba982e188c6eff38a446be8d9511241031210ac2 100644
--- a/Source/web/WebIDBKeyPath.cpp
+++ b/Source/web/WebIDBKeyPath.cpp
@@ -70,12 +70,17 @@ bool WebIDBKeyPath::isValid() const
     return m_private->isValid();
 }
 
-WebIDBKeyPath::Type WebIDBKeyPath::type() const
+WebIDBKeyPathType WebIDBKeyPath::keyPathType() const
 {
     ASSERT(m_private.get());
-    return Type(m_private->type());
+    return static_cast<WebIDBKeyPathType>(m_private->type());
 }
 
+WebIDBKeyPath::Type WebIDBKeyPath::type() const
+{
+    ASSERT(m_private.get());
+    return static_cast<WebIDBKeyPath::Type>(m_private->type());
+}
 
 WebVector<WebString> WebIDBKeyPath::array() const
 {