Build stocks.skyx

This CL teaches the build system how to create the stocks.skyx application
bundle. This bundle contains the stocks snapshot as well as the material design
assets needed by the stocks app to run offline.

R=eseidel@chromium.org, eseidel@google.com

Review URL: https://codereview.chromium.org/1216273002.

apk/rules.gni

@@ -5,6 +5,8 @@
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 
+package_root = "$root_gen_dir/dart-pkg/packages"
+
 template("sky_apk") {
   android_apk(target_name) {
     apk_name = invoker.apk_name
@@ -23,12 +25,11 @@ template("sky_apk") {
 }
 
 template("sky_app") {
+  # Note: org.chromium.base.ResourceExtractor knows about 'snapshot_blob.bin'.
+  snapshot = "$target_gen_dir/snapshot_blob.bin"
+
   action("gen_snapshot") {
     main_dart = invoker.main_dart
-    package_root = "$root_gen_dir/dart-pkg/packages"
-
-    # Note: org.chromium.base.ResourceExtractor knows about 'snapshot_blob.bin'.
-    snapshot = "$target_gen_dir/snapshot_blob.bin"
 
     inputs = [
       main_dart,
@@ -62,6 +63,40 @@ template("sky_app") {
     ]
   }
 
+  if (defined(invoker.sky_yaml)) {
+    app_bundle = "$target_gen_dir/${target_name}.skyx"
+
+    action("gen_bundle") {
+      asset_base = "$package_root/sky/assets/material-design-icons"
+      sky_yaml = invoker.sky_yaml
+
+      sources = [
+        sky_yaml,
+        snapshot,
+      ]
+
+      outputs = [
+        app_bundle,
+      ]
+
+      script = "//sky/tools/skyx.py"
+
+      args = [
+        rebase_path(sky_yaml, root_build_dir),
+        "--asset-base",
+        rebase_path(asset_base, root_build_dir),
+        "--snapshot",
+        rebase_path(snapshot, root_build_dir),
+        "-o",
+        rebase_path(app_bundle, root_build_dir),
+      ]
+
+      deps = [
+        ":gen_snapshot",
+      ]
+    }
+  }
+
   copy_ex("assets") {
     clear_dir = true
     dest = "$target_gen_dir/assets"
@@ -92,6 +127,10 @@ template("sky_app") {
       ":gen_snapshot",
     ]
 
+    if (defined(invoker.sky_yaml)) {
+      deps += [ ":gen_bundle" ]
+    }
+
     if (defined(invoker.deps)) {
       deps += invoker.deps
     }

sdk/example/stocks/BUILD.gn

@@ -9,4 +9,5 @@ import("//sky/apk/rules.gni")
 sky_app("stocks") {
   apk_name = "Stocks"
   main_dart = "lib/main.dart"
+  sky_yaml = "sky.yaml"
 }