Delete ChromeOS code

gyp/freetype.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Target for building freetype.
 {
   'targets': [
     {
       'target_name': 'freetype',
       'type': 'none',
@@ skipping 15 matching lines @@
                       'SK_FONTHOST_FREETYPE_RUNTIME_VERSION=0x020400',
                       'SK_CAN_USE_DLOPEN=0',
                     ],
                   }
                 }
               ]
             ],
           }, { # (not skia_freetype_static)
             # dynamic linking depends on the OS:
             'conditions': [
-              [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "chromeos"]',
+              [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris"]',
                 {
                   'direct_dependent_settings': {
                     'include_dirs' : [
                       '/usr/include/freetype2',
                     ],
                     'link_settings': {
                       'libraries': [
                         '-lfreetype',
                       ],
                     },
@@ skipping 57 matching lines @@
         }],
         [ 'skia_clang_build == 1', {
           'cflags':[
             '-w',
           ],
         }],
       ],
     },
   ],
 }