Replace more CFX_MapPtrToPtr and remove it.

pdfium.gyp

 # Copyright 2015 PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     # TODO(thakis): Enable this, pdfium:29
     #'chromium_code': 1,
     'pdf_use_skia%': 0,
     'pdf_enable_v8%': 1,
@@ skipping 411 matching lines @@
         'core/src/fxcrt/fxcrt_posix.cpp',
         'core/src/fxcrt/fxcrt_posix.h',
         'core/src/fxcrt/fxcrt_windows.cpp',
         'core/src/fxcrt/fxcrt_windows.h',
         'core/src/fxcrt/fx_basic_array.cpp',
         'core/src/fxcrt/fx_basic_bstring.cpp',
         'core/src/fxcrt/fx_basic_buffer.cpp',
         'core/src/fxcrt/fx_basic_coords.cpp',
         'core/src/fxcrt/fx_basic_gcc.cpp',
         'core/src/fxcrt/fx_basic_list.cpp',
-        'core/src/fxcrt/fx_basic_maps.cpp',
         'core/src/fxcrt/fx_basic_memmgr.cpp',
         'core/src/fxcrt/fx_basic_plex.cpp',
         'core/src/fxcrt/fx_basic_utf.cpp',
         'core/src/fxcrt/fx_basic_util.cpp',
         'core/src/fxcrt/fx_basic_wstring.cpp',
         'core/src/fxcrt/fx_bidi.cpp',
         'core/src/fxcrt/fx_extension.cpp',
         'core/src/fxcrt/fx_ucddata.cpp',
         'core/src/fxcrt/fx_unicode.cpp',
         'core/src/fxcrt/fx_xml_composer.cpp',
@@ skipping 355 matching lines @@
           ],
           'dependencies': [
             '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
             '<(DEPTH)/v8/tools/gyp/v8.gyp:v8_libplatform',
           ],
         }],
       ],
     },
   ],
 }