cronet_http: require android API level 28 (#1088)

.github/workflows/cronet.yml

@@ -6,12 +6,12 @@ on:
       - main
       - master
     paths:
-      - '.github/workflows/**'
+      - '.github/workflows/cronet.yaml'
       - 'pkgs/cronet_http/**'
       - 'pkgs/http_client_conformance_tests/**'
   pull_request:
     paths:
-      - '.github/workflows/**'
+      - '.github/workflows/cronet.yaml'
       - 'pkgs/cronet_http/**'
       - 'pkgs/http_client_conformance_tests/**'
   schedule:
@@ -58,8 +58,11 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         if: always() && steps.install.outcome == 'success'
         with:
+          # api-level/minSdkVersion should be help in sync in:
+          # - .github/workflows/cronet.yml
+          # - pkgs/cronet_http/android/build.gradle
+          # - pkgs/cronet_http/example/android/app/build.gradle
           api-level: 28
-          target: ${{ matrix.package == 'cronet_http_embedded' && 'default' || 'playstore' }}
-          arch: x86_64
+          target: ${{ matrix.package == 'cronet_http_embedded' && 'google_apis' || 'playstore' }}
           profile: pixel
           script: cd 'pkgs/${{ matrix.package }}/example' && flutter test --timeout=1200s integration_test/

pkgs/cronet_http/android/build.gradle

@@ -46,7 +46,11 @@ android {
     }
 
     defaultConfig {
-        minSdkVersion 19
+        // api-level/minSdkVersion should be help in sync in:
+        // - .github/workflows/cronet.yml
+        // - pkgs/cronet_http/android/build.gradle
+        // - pkgs/cronet_http/example/android/app/build.gradle
+        minSdkVersion 28
     }
 
     defaultConfig {

pkgs/cronet_http/example/android/app/build.gradle

@@ -46,7 +46,11 @@ android {
         applicationId "io.flutter.cronet_http_example"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
-        minSdkVersion 21
+        // api-level/minSdkVersion should be help in sync in:
+        // - .github/workflows/cronet.yml
+        // - pkgs/cronet_http/android/build.gradle
+        // - pkgs/cronet_http/example/android/app/build.gradle
+        minSdkVersion 28
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName

pkgs/cronet_http/tool/prepare_for_embedded.dart

@@ -13,6 +13,9 @@
 /// 1. Modifying the Gradle build file to reference the embedded Cronet.
 /// 2. Modifying the *name* and *description* in `pubspec.yaml`.
 /// 3. Replacing `README.md` with `README_EMBEDDED.md`.
+/// 4. Change the name of `cronet_http.dart` to `cronet_http_embedded.dart`.
+/// 5. Update all the imports from `package:cronet_http/cronet_http.dart` to
+///    `package:cronet_http_embedded/cronet_http_embedded.dart`
 ///
 /// After running this script, `flutter pub publish`
 /// can be run to update package:cronet_http_embedded.
@@ -40,8 +43,6 @@ final _cronetVersionUri = Uri.https(
   'android/maven2/org/chromium/net/group-index.xml',
 );
 
-/// Runs `prepare_for_embedded.dart publish` for publishing,
-/// or only the Android dependency will be modified.
 void main(List<String> args) async {
   if (Directory.current.path.endsWith('tool')) {
     _packageDirectory = Directory.current.parent;
@@ -53,8 +54,8 @@ void main(List<String> args) async {
   updateCronetDependency(latestVersion);
   updatePubSpec();
   updateReadme();
+  updateLibraryName();
   updateImports();
-  updateEntryPoint();
 }
 
 Future<String> _getLatestCronetVersion() async {
@@ -129,7 +130,7 @@ void updateImports() {
   }
 }
 
-void updateEntryPoint() {
+void updateLibraryName() {
   print('Renaming cronet_http.dart to cronet_http_embedded.dart');
   File(
     '${_packageDirectory.path}/lib/cronet_http.dart',