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

core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp

Index: core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
index 28c35c899ec7942ee39bd678fa1405befeb3451b..05d85e6398937f7392c37db37591f7aa9dfb629e 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
@@ -9,7 +9,7 @@
 #include <algorithm>
 
 #include "core/include/fpdfapi/cpdf_parser.h"
-#include "core/include/fpdfapi/fpdf_parser.h"
+#include "core/include/fpdfapi/fpdf_parser_decode.h"
 #include "core/include/fxcrt/fx_string.h"
 #include "third_party/base/stl_util.h"
 
@@ -669,6 +669,13 @@ FX_BOOL CPDF_Dictionary::KeyExist(const CFX_ByteStringC& key) const {
   return pdfium::ContainsKey(m_Map, key);
 }
 
+bool CPDF_Dictionary::IsSignatureDict() const {
+  CPDF_Object* pType = GetElementValue("Type");
+  if (!pType)
+    pType = GetElementValue("FT");
+  return pType && pType->GetString() == "Sig";
+}
+
 void CPDF_Dictionary::SetAt(const CFX_ByteStringC& key, CPDF_Object* pObj) {
   ASSERT(IsDictionary());
   // Avoid 2 constructions of CFX_ByteString.