Remove IXFA_* interfaces.

xfa.gyp

Index: xfa.gyp
diff --git a/xfa.gyp b/xfa.gyp
index 997ac883317c4c0958983ce3e9ed2fa8a4415ce4..ed42d7d3e02e60fd77855cc34e83ee6adbb6998b 100644
--- a/xfa.gyp
+++ b/xfa.gyp
@@ -39,6 +39,15 @@
         "xfa/include/fxfa/fxfa_basic.h",
         "xfa/include/fxfa/fxfa_objectacc.h",
         "xfa/include/fxfa/fxfa_widget.h",
+        "xfa/include/fxfa/xfa_checksum.h",
+        "xfa/include/fxfa/xfa_ffapp.h",
+        "xfa/include/fxfa/xfa_ffdoc.h",
+        "xfa/include/fxfa/xfa_ffdochandler.h",
+        "xfa/include/fxfa/xfa_ffdocview.h",
+        "xfa/include/fxfa/xfa_ffpageview.h",
+        "xfa/include/fxfa/xfa_ffwidgethandler.h",
+        "xfa/include/fxfa/xfa_fontmgr.h",
+        "xfa/include/fxfa/xfa_rendercontext.h",
         "xfa/fde/css/fde_css.h",
         "xfa/fde/css/fde_csscache.cpp",
         "xfa/fde/css/fde_csscache.h",
@@ -548,9 +557,7 @@
         "xfa/fxbarcode/BC_Writer.h",
         "xfa/fxbarcode/utils.h",
         "xfa/fxfa/app/xfa_checksum.cpp",
-        "xfa/fxfa/app/xfa_checksum.h",
         "xfa/fxfa/app/xfa_ffapp.cpp",
-        "xfa/fxfa/app/xfa_ffapp.h",
         "xfa/fxfa/app/xfa_ffbarcode.cpp",
         "xfa/fxfa/app/xfa_ffbarcode.h",
         "xfa/fxfa/app/xfa_ffcheckbutton.cpp",
@@ -558,11 +565,8 @@
         "xfa/fxfa/app/xfa_ffchoicelist.cpp",
         "xfa/fxfa/app/xfa_ffchoicelist.h",
         "xfa/fxfa/app/xfa_ffdoc.cpp",
-        "xfa/fxfa/app/xfa_ffdoc.h",
         "xfa/fxfa/app/xfa_ffdochandler.cpp",
-        "xfa/fxfa/app/xfa_ffdochandler.h",
         "xfa/fxfa/app/xfa_ffdocview.cpp",
-        "xfa/fxfa/app/xfa_ffdocview.h",
         "xfa/fxfa/app/xfa_ffdraw.cpp",
         "xfa/fxfa/app/xfa_ffdraw.h",
         "xfa/fxfa/app/xfa_ffexclgroup.cpp",
@@ -576,7 +580,6 @@
         "xfa/fxfa/app/xfa_ffnotify.cpp",
         "xfa/fxfa/app/xfa_ffnotify.h",
         "xfa/fxfa/app/xfa_ffpageview.cpp",
-        "xfa/fxfa/app/xfa_ffpageview.h",
         "xfa/fxfa/app/xfa_ffpath.cpp",
         "xfa/fxfa/app/xfa_ffpath.h",
         "xfa/fxfa/app/xfa_ffpushbutton.cpp",
@@ -594,15 +597,12 @@
         "xfa/fxfa/app/xfa_ffwidgetacc.cpp",
         "xfa/fxfa/app/xfa_ffwidgetacc.h",
         "xfa/fxfa/app/xfa_ffwidgethandler.cpp",
-        "xfa/fxfa/app/xfa_ffwidgethandler.h",
         "xfa/fxfa/app/xfa_fontmgr.cpp",
-        "xfa/fxfa/app/xfa_fontmgr.h",
         "xfa/fxfa/app/xfa_fwladapter.cpp",
         "xfa/fxfa/app/xfa_fwladapter.h",
         "xfa/fxfa/app/xfa_fwltheme.cpp",
         "xfa/fxfa/app/xfa_fwltheme.h",
         "xfa/fxfa/app/xfa_rendercontext.cpp",
-        "xfa/fxfa/app/xfa_rendercontext.h",
         "xfa/fxfa/app/xfa_textlayout.cpp",
         "xfa/fxfa/app/xfa_textlayout.h",
         "xfa/fxfa/fm2js/xfa_error.cpp",