Download the Android SDK as a CIPD package

scripts/slave/recipes/skia/swarm_compile.expected/Build-Mac-Clang-Arm7-Debug-Android.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
       "[CUSTOM_/_B_WORK]",
       "511"
     ],
     "name": "makedirs checkout_path",
@@ skipping 157 matching lines @@
   {
     "cmd": [
       "[CUSTOM_/_B_WORK]/skia/platform_tools/android/bin/android_ninja",
       "most",
       "-d",
       "arm_v7_neon",
       "--clang"
     ],
     "cwd": "[CUSTOM_/_B_WORK]/skia",
     "env": {
-      "ANDROID_HOME": "[SLAVE_BUILD]/android-sdk",
+      "ANDROID_HOME": "[SLAVE_BUILD]/android_sdk/android-sdk",
       "ANDROID_MAKE_CCACHE": "/usr/bin/ccache",
-      "ANDROID_SDK_ROOT": "[SLAVE_BUILD]/android-sdk",
+      "ANDROID_SDK_ROOT": "[SLAVE_BUILD]/android_sdk/android-sdk",
       "BUILDTYPE": "Debug",
       "CC": "/usr/bin/clang",
       "CHROME_HEADLESS": "1",
       "CXX": "/usr/bin/clang++",
       "GYP_DEFINES": "skia_arch_type=arm skia_clang_build=1 skia_warnings_as_errors=0",
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
       "PYTHONPATH": "[BUILD]/scripts",
       "SKIA_ANDROID_VERBOSE_SETUP": "1",
       "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Mac-Clang-Arm7-Debug-Android"
     },
@@ skipping 35 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    shutil.move(f, dst_path)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]