Split fpdfdoc/include/fpdf_doc.h into individual classes.

core/fpdfdoc/include/ipdf_formnotify.h

Index: core/fpdfdoc/include/ipdf_formnotify.h
diff --git a/core/fpdfdoc/include/ipdf_formnotify.h b/core/fpdfdoc/include/ipdf_formnotify.h
new file mode 100644
index 0000000000000000000000000000000000000000..65be2df3d7cbd151dd2b4251d1e8c0aa0193158e
--- /dev/null
+++ b/core/fpdfdoc/include/ipdf_formnotify.h
@@ -0,0 +1,32 @@
+// 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 CORE_FPDFDOC_INCLUDE_IPDF_FORMNOTIFY_H_
+#define CORE_FPDFDOC_INCLUDE_IPDF_FORMNOTIFY_H_
+
+#include "core/fxcrt/include/fx_string.h"
+
+class CPDF_FormField;
+class CPDF_InterForm;
+
+class IPDF_FormNotify {
+ public:
+  virtual ~IPDF_FormNotify();
+
+  virtual int BeforeValueChange(CPDF_FormField* pField,
+                                const CFX_WideString& csValue);
+  virtual void AfterValueChange(CPDF_FormField* pField);
+  virtual int BeforeSelectionChange(CPDF_FormField* pField,
+                                    const CFX_WideString& csValue);
+  virtual void AfterSelectionChange(CPDF_FormField* pField);
+  virtual void AfterCheckedStatusChange(CPDF_FormField* pField);
+  virtual int BeforeFormReset(CPDF_InterForm* pForm);
+  virtual void AfterFormReset(CPDF_InterForm* pForm);
+  virtual int BeforeFormImportData(CPDF_InterForm* pForm);
+  virtual void AfterFormImportData(CPDF_InterForm* pForm);
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_IPDF_FORMNOTIFY_H_