[flutter_tools] pass --enable-impeller to android (#104014)

Author: Jonah Williams

packages/flutter_tools/lib/src/android/android_device.dart

@@ -652,6 +652,8 @@ class AndroidDevice extends Device {
       ...<String>['--ez', 'cache-sksl', 'true'],
       if (debuggingOptions.purgePersistentCache)
         ...<String>['--ez', 'purge-persistent-cache', 'true'],
+      if (debuggingOptions.enableImpeller)
+        ...<String>['--ez', 'enable-impeller', 'true'],
       if (debuggingOptions.debuggingEnabled) ...<String>[
         if (debuggingOptions.buildInfo.isDebug) ...<String>[
           ...<String>['--ez', 'enable-checked-mode', 'true'],

packages/flutter_tools/lib/src/runner/flutter_command.dart

@@ -964,7 +964,7 @@ abstract class FlutterCommand extends Command<void> {
         negatable: false,
         hide: !verboseHelp,
         help: 'Whether to enable the experimental Impeller rendering engine. '
-              'Impeller is currently only supported on iOS. This flag will '
+              'Impeller is currently only supported on iOS and Android. This flag will '
               'be ignored when targeting other platforms.',
     );
   }

packages/flutter_tools/test/general.shard/android/android_device_start_test.dart

@@ -241,6 +241,7 @@ void main() {
         '--ez', 'dump-skp-on-shader-compilation', 'true',
         '--ez', 'cache-sksl', 'true',
         '--ez', 'purge-persistent-cache', 'true',
+        '--ez', 'enable-impeller', 'true',
         '--ez', 'enable-checked-mode', 'true',
         '--ez', 'verify-entry-points', 'true',
         '--ez', 'start-paused', 'true',
@@ -274,6 +275,7 @@ void main() {
         useTestFonts: true,
         verboseSystemLogs: true,
         nullAssertions: true,
+        enableImpeller: true,
       ),
       platformArgs: <String, dynamic>{},
       userIdentifier: '10',