Delete ChromeOS code

gyp/everything.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.
 # Build EVERYTHING provided by Skia.
 # (Start with the "most" target, and then add targets that we intentionally
 # left out of "most".  See most.gyp for an explanation of which targets are
 # left out of "most".)
 #
 # We used to call this the 'all' target, but in SOME cases that
 # conflicted with an automatically-generated 'all' target.
 # See https://code.google.com/p/skia/issues/detail?id=932
 #
 {
   'targets': [
     {
       'target_name': 'everything',
       'type': 'none',
       'dependencies': [
         'most.gyp:most',
         'skiaserve.gyp:skiaserve',
       ],
       'conditions': [
-        ['skia_os in ("ios", "android", "chromeos")', {
+        ['skia_os in ("ios", "android")', {
           # debugger is not supported on this platform
         }, {
           'dependencies': [
             'debugger.gyp:debugger',
             #'v8.gyp:SkV8Example',
           ],
         }],
       ],
     },
   ],
 }