fix analyzer warning

.cirrus.yml

@@ -1,7 +1,7 @@
 task:
   use_compute_credits: $CIRRUS_USER_COLLABORATOR == 'true' && $CIRRUS_PR == ''
   container:
-    dockerfile: .ci/Dockerfile    
+    dockerfile: .ci/Dockerfile
     cpu: 4
     memory: 8G
   upgrade_script:
@@ -11,7 +11,8 @@ task:
   activate_script: pub global activate flutter_plugin_tools
   matrix:
     - name: analyze
-      script: ./script/incremental_build.sh analyze
+      # TODO(goderbauer): remove custom-analysis once fuchsia_ctl and gauge have proper API docs.
+      script: ./script/incremental_build.sh analyze --custom-analysis fuchsia_ctl,gauge
     - name: publishable
       script: ./script/check_publish.sh
       depends_on:

packages/palette_generator/example/android/app/build.gradle

@@ -20,7 +20,7 @@ apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
 
     lintOptions {
         disable 'InvalidPackage'

packages/palette_generator/pubspec.yaml

@@ -1,6 +1,5 @@
 name: palette_generator
 description: Flutter package for generating palette colors from a source image.
-author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/packages/tree/master/packages/palette_generator
 version: 0.2.0
 

packages/palette_generator/test/palette_generator_test.dart

@@ -30,7 +30,7 @@ class FakeImageProvider extends ImageProvider<FakeImageProvider> {
   }
 
   @override
-  ImageStreamCompleter load(FakeImageProvider key) {
+  ImageStreamCompleter load(FakeImageProvider key, DecoderCallback decode) {
     assert(key == this);
     return OneFrameImageStreamCompleter(
       SynchronousFuture<ImageInfo>(