Move CPDFSDK_Annot, CPDFSDK_BAAnnot and CPDFSDK_DateTime to their own files.

pdfium.gyp

Index: pdfium.gyp
diff --git a/pdfium.gyp b/pdfium.gyp
index 3e415939d49cb13ef7ed600334c06a2017f50009..1cc8758bd9d12d8d5a9449c05ba2eb5bf83d3441 100644
--- a/pdfium.gyp
+++ b/pdfium.gyp
@@ -86,11 +86,16 @@
       'sources': [
         'fpdfsdk/cfx_systemhandler.cpp',
         'fpdfsdk/cfx_systemhandler.h',
+        'fpdfsdk/include/cpdfsdk_annot.h',
+        'fpdfsdk/include/cpdfsdk_baannot.h',
+        'fpdfsdk/include/cpdfsdk_datetime.h',
         'fpdfsdk/include/fsdk_actionhandler.h',
         'fpdfsdk/include/fsdk_annothandler.h',
-        'fpdfsdk/include/fsdk_baseannot.h',
         'fpdfsdk/include/fsdk_baseform.h',
         'fpdfsdk/include/fsdk_pauseadapter.h',
+        'fpdfsdk/cpdfsdk_annot.cpp',
+        'fpdfsdk/cpdfsdk_baannot.cpp',
+        'fpdfsdk/cpdfsdk_datetime.cpp',
         'fpdfsdk/fpdfdoc.cpp',
         'fpdfsdk/fpdfeditimg.cpp',
         'fpdfsdk/fpdfeditpage.cpp',
@@ -108,7 +113,6 @@
         'fpdfsdk/fpdf_transformpage.cpp',
         'fpdfsdk/fsdk_actionhandler.cpp',
         'fpdfsdk/fsdk_annothandler.cpp',
-        'fpdfsdk/fsdk_baseannot.cpp',
         'fpdfsdk/fsdk_baseform.cpp',
         'fpdfsdk/fsdk_mgr.cpp',
         'fpdfsdk/fsdk_pauseadapter.cpp',