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

Source/core/html/DOMFormData.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DOMFormData_h
 #define DOMFormData_h
 
+#include "bindings/core/v8/ScriptState.h"
+#include "bindings/core/v8/UnionTypesCore.h"
+#include "core/dom/Iterable.h"
 #include "core/html/FormDataList.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WTF{
 class TextEncoding;
 }
 
 namespace blink {
 
 class Blob;
 class HTMLFormElement;
 
-class DOMFormData final : public FormDataList, public ScriptWrappable {
+// Typedef from FormData.idl:
+typedef FileOrUSVString FormDataEntryValue;
+
+class DOMFormData final : public FormDataList, public ScriptWrappable, public PairIterable<String, FormDataEntryValue> {
     DEFINE_WRAPPERTYPEINFO();
+
 public:
     static PassRefPtrWillBeRawPtr<DOMFormData> create(HTMLFormElement* form = 0)
     {
         return adoptRefWillBeNoop(new DOMFormData(form));
     }
 
     static PassRefPtrWillBeRawPtr<DOMFormData> create(const WTF::TextEncoding& encoding)
     {
         return adoptRefWillBeNoop(new DOMFormData(encoding));
     }
 
+    // FormData interface.
     void append(const String& name, const String& value);
     void append(const String& name, Blob*, const String& filename = String());
+    void get(const String& name, FormDataEntryValue& result);
+    Vector<FormDataEntryValue> getAll(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&);
     explicit DOMFormData(HTMLFormElement*);
+
+    IterationSource* startIteration(ScriptState*, ExceptionState&) override;
 };
 
 } // namespace blink
 
 #endif // DOMFormData_h