New FormData methods: get, getAll, has, set, delete and iterable

Source/core/html/DOMFormData.h

Index: Source/core/html/DOMFormData.h
diff --git a/Source/core/html/DOMFormData.h b/Source/core/html/DOMFormData.h
index c57a6a0ed2219918a88adbc67946300ccc1d1b66..f7a27a4daae53959cf4d329db97d3ac2c88ec7a3 100644
--- a/Source/core/html/DOMFormData.h
+++ b/Source/core/html/DOMFormData.h
@@ -31,6 +31,7 @@
 #ifndef DOMFormData_h
 #define DOMFormData_h
 
+#include "bindings/core/v8/ScriptState.h"
 #include "core/html/FormDataList.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
@@ -61,6 +62,12 @@ public:
 
     void append(const String& name, const String& value);
     void append(const String& name, Blob*, const String& filename = String());
+    void deleteFunction(const String& name);

[sof, 2014/09/12 15:21:26]

nit: some precedence for using ImplementedAs=remove for delete() operations. 

[jsbell, 2014/09/12 16:30:09]

Done.

+    ScriptValue get(ScriptState*, const String& name);
+    Vector<ScriptValue> getAll(ScriptState*, const String& name);
+    bool has(const String& name);
+    void set(const String& name, const String& value);
+    void set(const String& name, Blob*, const String& filename = String());
 
 private:
     explicit DOMFormData(const WTF::TextEncoding&);