Split fpdfsdk/fsdk_baseform.h into individual classes.

fpdfsdk/include/cpdfsdk_xfawidget.h

Index: fpdfsdk/include/cpdfsdk_xfawidget.h
diff --git a/fpdfsdk/include/cpdfsdk_xfawidget.h b/fpdfsdk/include/cpdfsdk_xfawidget.h
new file mode 100644
index 0000000000000000000000000000000000000000..46e71b64819d9dac458595c21d9fb2ed99533625
--- /dev/null
+++ b/fpdfsdk/include/cpdfsdk_xfawidget.h
@@ -0,0 +1,38 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef FPDFSDK_INCLUDE_CPDFSDK_XFAWIDGET_H_
+#define FPDFSDK_INCLUDE_CPDFSDK_XFAWIDGET_H_
+
+#include "core/fxcrt/include/fx_coordinates.h"
+#include "core/fxcrt/include/fx_string.h"
+#include "fpdfsdk/include/cpdfsdk_annot.h"
+
+class CPDFSDK_InterForm;
+class CPDFSDK_PageView;
+class CXFA_FFWidget;
+
+class CPDFSDK_XFAWidget : public CPDFSDK_Annot {
+ public:
+  CPDFSDK_XFAWidget(CXFA_FFWidget* pAnnot,
+                    CPDFSDK_PageView* pPageView,
+                    CPDFSDK_InterForm* pInterForm);
+  ~CPDFSDK_XFAWidget() override {}
+
+  FX_BOOL IsXFAField() override;
+  CXFA_FFWidget* GetXFAWidget() const override;
+  CFX_ByteString GetType() const override;
+  CFX_ByteString GetSubType() const override;
+  CFX_FloatRect GetRect() const override;
+
+  CPDFSDK_InterForm* GetInterForm() { return m_pInterForm; }
+
+ private:
+  CPDFSDK_InterForm* m_pInterForm;
+  CXFA_FFWidget* m_hXFAWidget;
+};
+
+#endif  // FPDFSDK_INCLUDE_CPDFSDK_XFAWIDGET_H_