Add debug fission support.

src/common/common.gyp

 # Copyright 2014 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 57 matching lines @@
         'dwarf/bytereader.cc',
         'dwarf/bytereader.h',
         'dwarf/cfi_assembler.cc',
         'dwarf/cfi_assembler.h',
         'dwarf/dwarf2diehandler.cc',
         'dwarf/dwarf2diehandler.h',
         'dwarf/dwarf2enums.h',
         'dwarf/dwarf2reader.cc',
         'dwarf/dwarf2reader.h',
         'dwarf/dwarf2reader_test_common.h',
+        'dwarf/elf_reader.cc',
+        'dwarf/elf_reader.h',
         'dwarf/functioninfo.cc',
         'dwarf/functioninfo.h',
         'dwarf/line_state_machine.h',
         'dwarf/types.h',
         'dwarf_cfi_to_module.cc',
         'dwarf_cfi_to_module.h',
         'dwarf_cu_to_module.cc',
         'dwarf_cu_to_module.h',
         'dwarf_line_to_module.cc',
         'dwarf_line_to_module.h',
@@ skipping 151 matching lines @@
         '../build/testing.gypi:gmock_main',
         '../build/testing.gypi:gmock',
         '../build/testing.gypi:gtest',
       ],
       'libraries': [
         '-ldl',
       ],
     },
   ],
 }