bring pdfium file in sync with chrome, fix mac build

skia/skia_library.gypi

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 # This gypi file contains the Skia library.
 # In component mode (shared_lib) it is folded into a single shared library with
 # the PDFium-specific enhancements but in all other cases it is a separate lib.
 
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@@ skipping 23 matching lines @@
 
     '../third_party/skia/src/fonts/SkFontMgr_indirect.cpp',
     '../third_party/skia/src/fonts/SkRemotableFontMgr.cpp',
     '../third_party/skia/src/ports/SkRemotableFontMgr_win_dw.cpp',
 
     '../third_party/skia/src/ports/SkImageEncoder_none.cpp',
     '../third_party/skia/src/ports/SkImageGenerator_none.cpp',
 
     '../third_party/skia/src/ports/SkFontHost_FreeType.cpp',
     '../third_party/skia/src/ports/SkFontHost_FreeType_common.cpp',
-    '../third_party/skia/src/ports/SkFontHost_mac.cpp',
     '../third_party/skia/src/ports/SkFontHost_win.cpp',
     "../third_party/skia/src/ports/SkFontMgr_android.cpp",
     "../third_party/skia/src/ports/SkFontMgr_android_factory.cpp",
     '../third_party/skia/src/ports/SkFontMgr_android_parser.cpp',
     '../third_party/skia/src/ports/SkFontMgr_custom.cpp',
     '../third_party/skia/src/ports/SkFontMgr_custom_empty_factory.cpp',
 
     '../third_party/skia/src/ports/SkGlobalInitialization_default.cpp',
     '../third_party/skia/src/ports/SkMemory_malloc.cpp',
     '../third_party/skia/src/ports/SkOSFile_posix.cpp',
@@ skipping 242 matching lines @@
       '../third_party/skia/include/pdf',
       '../third_party/skia/include/gpu',
       '../third_party/skia/include/lazy',
       '../third_party/skia/include/pathops',
       '../third_party/skia/include/pipe',
       '../third_party/skia/include/ports',
       '../third_party/skia/include/utils',
     ],
   },
 }