Remove CJBig2_Object, CJBig2_Module, and friends.

pdfium.gyp

 {
   'variables': {
     'pdf_use_skia%': 0,
     'conditions': [
       ['OS=="linux"', {
         'bundle_freetype%': 0,
       }, {  # On Android there's no system FreeType. On Windows and Mac, only a
             # few methods are used from it.
         'bundle_freetype%': 1,
       }],
@@ skipping 342 matching lines @@
         'core/src/fxcodec/jbig2/JBig2_GeneralDecoder.cpp',
         'core/src/fxcodec/jbig2/JBig2_GeneralDecoder.h',
         'core/src/fxcodec/jbig2/JBig2_HuffmanDecoder.cpp',
         'core/src/fxcodec/jbig2/JBig2_HuffmanDecoder.h',
         'core/src/fxcodec/jbig2/JBig2_HuffmanTable.cpp',
         'core/src/fxcodec/jbig2/JBig2_HuffmanTable.h',
         'core/src/fxcodec/jbig2/JBig2_HuffmanTable_Standard.h',
         'core/src/fxcodec/jbig2/JBig2_Image.cpp',
         'core/src/fxcodec/jbig2/JBig2_Image.h',
         'core/src/fxcodec/jbig2/JBig2_List.h',
-        'core/src/fxcodec/jbig2/JBig2_Module.h',
-        'core/src/fxcodec/jbig2/JBig2_Object.cpp',
-        'core/src/fxcodec/jbig2/JBig2_Object.h',
         'core/src/fxcodec/jbig2/JBig2_Page.h',
         'core/src/fxcodec/jbig2/JBig2_PatternDict.cpp',
         'core/src/fxcodec/jbig2/JBig2_PatternDict.h',
         'core/src/fxcodec/jbig2/JBig2_Segment.cpp',
         'core/src/fxcodec/jbig2/JBig2_Segment.h',
         'core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp',
         'core/src/fxcodec/jbig2/JBig2_SymbolDict.h',
       ],
       'msvs_settings': {
         'VCCLCompilerTool': {
@@ skipping 378 matching lines @@
         'testing/embedder_test.cpp',
         'testing/embedder_test.h',
         'testing/embedder_test_mock_delegate.h',
         'testing/embedder_test_timer_handling_delegate.h',
         'testing/fx_string_testhelpers.cpp',
         'testing/fx_string_testhelpers.h',
       ],
     },
   ],
 }