add separate impl file for SkFontMgr_fontconfig, so we don't polute

trunk/gyp/ports.gyp

 # Port-specific Skia library code.
 {
   'targets': [
     {
       'target_name': 'ports',
       'product_name': 'skia_ports',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:core',
@@ skipping 33 matching lines @@
             'SK_CAN_USE_DLOPEN=1',
           ],
           'link_settings': {
             'libraries': [
               '-lfreetype',
               '-lfontconfig',
               '-ldl',
             ],
           },
           'sources': [
+            '../src/fonts/SkFontMgr_fontconfig.cpp',
             '../src/ports/SkFontHost_FreeType.cpp',
             '../src/ports/SkFontHost_FreeType_common.cpp',
             '../src/ports/SkFontHost_fontconfig.cpp',
             '../src/ports/SkFontConfigInterface_direct.cpp',
             '../src/ports/SkThread_pthread.cpp',
           ],
         }],
         [ 'skia_os == "nacl"', {
           'dependencies': [
             # On other OS, we can dynamically link against freetype.  For nacl,
@@ skipping 118 matching lines @@
       },
     },
   ],
 }
 
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