Delete ChromeOS code

gyp/gpu.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.
 # GYP for building gpu
 {
   'target_defaults': {
     'conditions': [
       ['skia_os != "win"', {
         'sources/': [ ['exclude', '_win.(h|cpp)$'],
         ],
       }],
       ['skia_os != "mac"', {
         'sources/': [ ['exclude', '_mac.(h|cpp|m|mm)$'],
         ],
       }],
-      ['skia_os != "linux" and skia_os != "chromeos"', {
+      ['skia_os != "linux"', {
         'sources/': [ ['exclude', '_glx.(h|cpp)$'],
         ],
       }],
       ['skia_os != "ios"', {
         'sources/': [ ['exclude', '_iOS.(h|cpp|m|mm)$'],
         ],
       }],
       ['skia_os != "android"', {
         'sources/': [ ['exclude', '_android.(h|cpp)$'],
         ],
@@ skipping 88 matching lines @@
         }],
         [ 'skia_chrome_utils', {
           'sources': [
             '../experimental/ChromeUtils/SkBorder.cpp',
             '../experimental/ChromeUtils/SkBorder.h',
           ],
           'defines': [
             'GR_CHROME_UTILS=1',
           ],
         }],
-        [ 'skia_os == "linux" or skia_os == "chromeos"', {
+        [ 'skia_os == "linux"', {
           'sources!': [
             '../src/gpu/gl/GrGLDefaultInterface_none.cpp',
             '../src/gpu/gl/GrGLCreateNativeInterface_none.cpp',
           ],
         }],
-        [ '(skia_os == "linux" or skia_os == "chromeos") and skia_egl == 1', {
+        [ 'skia_os == "linux" and skia_egl == 1', {
           'link_settings': {
             'libraries': [
               '-lEGL',
               '-lGLESv2',
             ],
           },
         }],
-        [ '(skia_os == "linux" or skia_os == "chromeos") and skia_egl == 0', {
+        [ 'skia_os == "linux" and skia_egl == 0', {
           'link_settings': {
             'libraries': [
               '-lGL',
               '-lGLU',
               '-lX11',
             ],
           },
         }],
         [ 'skia_os == "mac"', {
           'link_settings': {
@@ skipping 73 matching lines @@
           },
         }, {
           'sources!': [
             '<@(skgpu_vk_sources)',
           ],
         }],
       ],
     },
   ],
 }