Rename is_chromeos in chrome/src.

content/common/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/common/common.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 if (is_mac) {
   import("//build/config/mac/mac_sdk.gni")
 }
 
-if (is_chromeos && current_cpu != "arm") {
+if (use_cros_fe && current_cpu != "arm") {
   action("libva_generate_stubs") {
     extra_header = "gpu/media/va_stub_header.fragment"
 
     script = "../../tools/generate_stubs/generate_stubs.py"
     sources = [
       "gpu/media/va.sigs",
     ]
     inputs = [
       extra_header,
     ]
@@ skipping 21 matching lines @@
       "-s",
       stubs_filename_root,
       "-p",
       "content/common/gpu/media",
     ]
 
     args += rebase_path(sources, root_build_dir)
   }
 }
 
-if (is_chromeos && use_v4lplugin) {
+if (use_cros_fe && use_v4lplugin) {
   action("libv4l2_generate_stubs") {
     extra_header = "gpu/media/v4l2_stub_header.fragment"
 
     script = "../../tools/generate_stubs/generate_stubs.py"
     sources = [
       "gpu/media/v4l2.sig",
     ]
     inputs = [
       extra_header,
     ]
@@ skipping 237 matching lines @@
   } else {
     sources -= [ "font_list_pango.cc" ]
   }
 
   if (use_x11) {
     configs += [
       "//build/config/linux:xcomposite",
       "//third_party/khronos:khronos_headers",
     ]
 
-    if (current_cpu != "arm" || !is_chromeos) {
+    if (current_cpu != "arm" || !use_cros_fe) {
       sources += [ "gpu/x_util.h" ]
     }
   }
 
   if (enable_plugins) {
     deps += [ "//ppapi/shared_impl" ]
   } else {
     sources -= [
       "pepper_file_util.cc",
       "pepper_file_util.h",
@@ skipping 13 matching lines @@
     sources += [
       "gpu/media/android_video_decode_accelerator.cc",
       "gpu/media/android_video_decode_accelerator.h",
     ]
 
     if (enable_webrtc) {
       deps += [ "//third_party/libyuv" ]
     }
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     sources += [
       "gpu/media/accelerated_video_decoder.h",
       "gpu/media/h264_decoder.cc",
       "gpu/media/h264_decoder.h",
       "gpu/media/h264_dpb.cc",
       "gpu/media/h264_dpb.h",
       "gpu/media/vp8_decoder.cc",
       "gpu/media/vp8_decoder.h",
       "gpu/media/vp8_picture.cc",
       "gpu/media/vp8_picture.h",
@@ skipping 148 matching lines @@
 
   import_dirs = [ "//mojo/services" ]
 
   deps = [
     "//content/public/common:mojo_bindings",
     "//mojo/application/public/interfaces",
     "//skia/public/interfaces",
     "//ui/mojo/geometry:interfaces",
   ]
 }