Refactor gradle.dart (#43479)

diff --git a/packages/flutter_tools/lib/src/commands/create.dart b/packages/flutter_tools/lib/src/commands/create.dart
index 4d26cb9..808456c 100644
--- a/packages/flutter_tools/lib/src/commands/create.dart
+++ b/packages/flutter_tools/lib/src/commands/create.dart
@@ -10,7 +10,7 @@
 
 import '../android/android.dart' as android;
 import '../android/android_sdk.dart' as android_sdk;
-import '../android/gradle.dart' as gradle;
+import '../android/gradle_utils.dart' as gradle;
 import '../base/common.dart';
 import '../base/file_system.dart';
 import '../base/net.dart';