Add script to validate installed Android SDK packages

build/secondary/third_party/android_tools/BUILD.gn

Index: build/secondary/third_party/android_tools/BUILD.gn
diff --git a/build/secondary/third_party/android_tools/BUILD.gn b/build/secondary/third_party/android_tools/BUILD.gn
index 8c75044b7a8a4c6414232739659b7fa0fbd25b6d..7d6d5ebe47c4f92b8dbbb02a4be86ec6ce987a0a 100644
--- a/build/secondary/third_party/android_tools/BUILD.gn
+++ b/build/secondary/third_party/android_tools/BUILD.gn
@@ -93,5 +93,28 @@ android_java_prebuilt("google_play_services_default_java") {
   ]
   proguard_preprocess = true
   proguard_config = "//third_party/android_tools/proguard.flags"
+
+  # TODO(dgn) deps should not complain about having a custom action here
+  # Currently, there is no guarantee that the data_deps actions will complete before the current one runs
+  data_deps = [ ":check_sdk_extras_version" ]
   jar_path = "$android_sdk_root/extras/google/google_play_services/libproject/google-play-services_lib/libs/google-play-services.jar"
 }
+
+action("check_sdk_extras_version") {
+  script = "//build/check_sdk_extras_version.py"
+  args = [
+    "--package-id",
+    "extra-google-google_play_services",
+    "--package-location",
+    rebase_path("$android_sdk_root/extras/google/google_play_services"),
+    "--stamp",
+    rebase_path("$target_gen_dir/checked_sdk_extras_version.stamp"),
+  ]
+  inputs = [
+    "//build/android_sdk_extras.json",
+    "$android_sdk_root/extras/google/google_play_services/source.properties",
+  ]
+  outputs = [
+    "$target_gen_dir/checked_sdk_extras_version.stamp",
+  ]
+}