Separate WebIDBKey type into separate header

public/platform/WebIDBTypes.h

Index: public/platform/WebIDBTypes.h
diff --git a/Source/modules/device_orientation/DeviceAcceleration.idl b/public/platform/WebIDBTypes.h
similarity index 76%
copy from Source/modules/device_orientation/DeviceAcceleration.idl
copy to public/platform/WebIDBTypes.h
index c4ff4a67e611f904d3f6a657a4a56849d015810b..f80d2fa904c9e5c7d713763c6df8189fe9b686b8 100644
--- a/Source/modules/device_orientation/DeviceAcceleration.idl
+++ b/public/platform/WebIDBTypes.h
@@ -23,10 +23,28 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-    NoInterfaceObject
-] interface DeviceAcceleration {
-    readonly attribute double? x;
-    readonly attribute double? y;
-    readonly attribute double? z;
+#ifndef WebIDBTypes_h
+#define WebIDBTypes_h
+
+namespace WebKit {
+
+enum WebIDBKeyType {
+    WebIDBKeyTypeInvalid = 0,
+    WebIDBKeyTypeArray,
+    WebIDBKeyTypeString,
+    WebIDBKeyTypeDate,
+    WebIDBKeyTypeNumber,
+    WebIDBKeyTypeNull,
+    WebIDBKeyTypeMin,
+};
+
+enum WebIDBKeyPathType {
+    WebIDBKeyPathTypeNull = 0,
+    WebIDBKeyPathTypeString,
+    WebIDBKeyPathTypeArray,
 };
+
+
+} // namespace WebKit
+
+#endif // WebIDBTypes_h