Temporarily disable gpu on chromeos

platform_tools/chromeos/bin/chromeos_setup.sh

 # Set up the environment to build Skia for ChromeOS.
 
 function exportVar {
   NAME=$1
   VALUE=$2
   echo export $NAME=\"$VALUE\"
   export $NAME="$VALUE"
 }
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 # Helper function to configure the GYP defines to the appropriate values
 # based on the target device.
 setup_device() {
   # Setup the build variation depending on the target device
   TARGET_DEVICE="${SDK_BOARD}"
 
   if [ -z "$TARGET_DEVICE" ]; then
     echo "ERROR: No target device specified!"
     return 1
   fi
 
-  DEFINES="OS=linux host_os=linux skia_os=chromeos"
+  DEFINES="OS=linux host_os=linux skia_os=chromeos skia_gpu=0"
 
   case $TARGET_DEVICE in
     x86-alex)
         DEFINES="${DEFINES} skia_arch_type=x86 skia_arch_width=32"
         GENERIC_BOARD_TYPE="x86-generic"
         ;;
     link)
         DEFINES="${DEFINES} skia_arch_type=x86 skia_arch_width=64"
         GENERIC_BOARD_TYPE="amd64-generic"
         ;;
@@ skipping 13 matching lines @@
 
   echo "The build is targeting the device: $TARGET_DEVICE"
 
   exportVar GENERIC_BOARD_TYPE ${GENERIC_BOARD_TYPE}
   exportVar GYP_DEFINES "$DEFINES"
   exportVar GYP_GENERATORS "make"
   exportVar GYP_GENERATOR_FLAGS ""
   exportVar SKIA_OUT "out/config/chromeos-${TARGET_DEVICE}"
   exportVar builddir_name "."
 }