Separate WebIDBKey type into separate header

public/platform/WebIDBKey.h

Index: public/platform/WebIDBKey.h
diff --git a/public/platform/WebIDBKey.h b/public/platform/WebIDBKey.h
index 5cdda3d5bfdc1c14bdda11132250dcfeecdcab8d..215ed9a9174a77cf58dc31705acd2746c2e5bfe7 100644
--- a/public/platform/WebIDBKey.h
+++ b/public/platform/WebIDBKey.h
@@ -27,6 +27,7 @@
 #define WebIDBKey_h
 
 #include "WebCommon.h"
+#include "WebIDBKeyType.h"
 #include "WebPrivatePtr.h"
 #include "WebString.h"
 #include "WebVector.h"
@@ -64,6 +65,14 @@ public:
     WEBKIT_EXPORT void assignNull();
     WEBKIT_EXPORT void reset();
 
+    WEBKIT_EXPORT WebIDBKeyType keyType() const;

[jamesr, 2013/07/16 00:57:20]

this is an unfortunately stuttery name, but since there's a lot of chromium code
calling type() I can't change the return type without using a #define and
landing a prereq chromium patch with #ifdefs all over the place. with this, we
can land this patch first then a chromium patch to convert to the new enum +
function and then (if we want) add a type() function back to WebIDBKey and
convert chromium over to it.

+    WEBKIT_EXPORT bool isValid() const;
+    WEBKIT_EXPORT WebVector<WebIDBKey> array() const; // Only valid for ArrayType.
+    WEBKIT_EXPORT WebString string() const; // Only valid for StringType.
+    WEBKIT_EXPORT double date() const; // Only valid for DateType.
+    WEBKIT_EXPORT double number() const; // Only valid for NumberType.
+
+    // DEPRECATED. FIXME: Remove once all callers switch over to WebIDBKeyType / keyType().
     enum Type {
         InvalidType = 0,
         ArrayType,
@@ -73,13 +82,7 @@ public:
         NullType,
         MinType,
     };
-
     WEBKIT_EXPORT Type type() const;
-    WEBKIT_EXPORT bool isValid() const;
-    WEBKIT_EXPORT WebVector<WebIDBKey> array() const; // Only valid for ArrayType.
-    WEBKIT_EXPORT WebString string() const; // Only valid for StringType.
-    WEBKIT_EXPORT double date() const; // Only valid for DateType.
-    WEBKIT_EXPORT double number() const; // Only valid for NumberType.
 
 #if WEBKIT_IMPLEMENTATION
     WebIDBKey(const WTF::PassRefPtr<WebCore::IDBKey>&);