adb_wait_for_charge: Don't download toolchains

platform_tools/android/bin/adb_wait_for_charge

Index: platform_tools/android/bin/adb_wait_for_charge
diff --git a/platform_tools/android/bin/adb_wait_for_charge b/platform_tools/android/bin/adb_wait_for_charge
index 43e70bcf69e074ad03a86f290e07bd98c11ec1bb..e24773aedaad18bbde976b4d589935a7630598fb 100755
--- a/platform_tools/android/bin/adb_wait_for_charge
+++ b/platform_tools/android/bin/adb_wait_for_charge
@@ -3,6 +3,7 @@
 # Wait for the device to be charged enough for testing.
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+SKIP_TOOLCHAIN_SETUP="true"
 source $SCRIPT_DIR/android_setup.sh
 source $SCRIPT_DIR/utils/setup_adb.sh
 
@@ -72,4 +73,4 @@ while [ "${CURRENT_BATTERY_LEVEL}" -lt "${DESIRED_BATTERY_LEVEL}" ]; do
   CURRENT_BATTERY_LEVEL="$(get_battery_level)"
 done
 
-echo "Charged!"
+echo "Charged!"