update our build system to support the experimental L-Release NDK

platform_tools/android/bin/android_setup.sh

Index: platform_tools/android/bin/android_setup.sh
diff --git a/platform_tools/android/bin/android_setup.sh b/platform_tools/android/bin/android_setup.sh
index 4a7326bf86fff1dcc6e627d903ce981b17109863..42090502ee036018eeb1d86d95a356426181d32d 100755
--- a/platform_tools/android/bin/android_setup.sh
+++ b/platform_tools/android/bin/android_setup.sh
@@ -116,6 +116,10 @@ setup_device() {
       DEFINES="${DEFINES} skia_resource_cache_mb_limit=32"
       ANDROID_ARCH="x86"
       ;;
+    x86_64 | x64)
+      DEFINES="${DEFINES} skia_arch_type=x86 skia_arch_width=64"
+      ANDROID_ARCH="x86_64"
+      ;;
     arm_v7)
       DEFINES="${DEFINES} skia_arch_type=arm arm_neon_optional=1 arm_version=7 arm_thumb=0"
       ANDROID_ARCH="arm"
@@ -132,11 +136,19 @@ setup_device() {
       DEFINES="${DEFINES} skia_arch_type=arm arm_neon=0 arm_thumb=1"
       ANDROID_ARCH="arm"
       ;;
+    arm64)
+      DEFINES="${DEFINES} skia_arch_type=arm64 skia_arch_width=64"
+      ANDROID_ARCH="arm64"
+      ;;
     mips)
       DEFINES="${DEFINES} skia_arch_type=mips skia_arch_width=32"
       DEFINES="${DEFINES} skia_resource_cache_mb_limit=32"
       ANDROID_ARCH="mips"
       ;;
+    mips64)
+      DEFINES="${DEFINES} skia_arch_type=mips skia_arch_width=64"
+      ANDROID_ARCH="mips64"
+      ;;
     *)
       if [ -z "$ANDROID_IGNORE_UNKNOWN_DEVICE" ]; then
           echo "ERROR: unknown device $TARGET_DEVICE"