Split apart the remainder of fpdf_render_render.cpp into per-class files.

core/include/fpdfapi/cpdf_document.h

Index: core/include/fpdfapi/cpdf_document.h
diff --git a/core/include/fpdfapi/cpdf_document.h b/core/include/fpdfapi/cpdf_document.h
index bba89c822cb8401cedec805fbe913547435fd905..c759861cd7f635bba61c974f0cc89815988bb164 100644
--- a/core/include/fpdfapi/cpdf_document.h
+++ b/core/include/fpdfapi/cpdf_document.h
@@ -20,6 +20,16 @@ class CPDF_IccProfile;
 class CPDF_Image;
 class CPDF_Pattern;
 
+#define FPDFPERM_PRINT 0x0004
+#define FPDFPERM_MODIFY 0x0008
+#define FPDFPERM_EXTRACT 0x0010
+#define FPDFPERM_ANNOT_FORM 0x0020
+#define FPDFPERM_FILL_FORM 0x0100
+#define FPDFPERM_EXTRACT_ACCESS 0x0200
+#define FPDFPERM_ASSEMBLE 0x0400
+#define FPDFPERM_PRINT_HIGH 0x0800
+#define FPDF_PAGE_MAX_NUM 0xFFFFF
+
 class CPDF_Document : public CFX_PrivateData, public CPDF_IndirectObjectHolder {
  public:
   CPDF_Document();