Move CPDF_Type3Cache and CPDF_Type3Glyphs to their own files

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index b2f16b3ff14f48bc25c6bcefb8abd4ca9561c188..44040a9251881ff7e165cab491f2e795c7e8ee10 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -524,6 +524,10 @@ static_library("fpdfapi") {
     "core/fpdfapi/fpdf_parser/include/cpdf_string.h",
     "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h",
     "core/fpdfapi/fpdf_render/cpdf_pagerendercache.h",
+    "core/fpdfapi/fpdf_render/cpdf_type3cache.cpp",
+    "core/fpdfapi/fpdf_render/cpdf_type3cache.h",
+    "core/fpdfapi/fpdf_render/cpdf_type3glyphs.cpp",
+    "core/fpdfapi/fpdf_render/cpdf_type3glyphs.h",
     "core/fpdfapi/fpdf_render/fpdf_render.cpp",
     "core/fpdfapi/fpdf_render/fpdf_render_cache.cpp",
     "core/fpdfapi/fpdf_render/fpdf_render_image.cpp",