[fuchsia] dart_package is now dart_library. (#13979)

packages/flutter/BUILD.gn

diff --git a/packages/flutter/BUILD.gn b/packages/flutter/BUILD.gn
index c0d23aa..7c4ab87 100644
--- a/packages/flutter/BUILD.gn
+++ b/packages/flutter/BUILD.gn
@@ -2,9 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//build/dart/dart_package.gni")
+import("//build/dart/dart_library.gni")
 
-dart_package("flutter") {
+dart_library("flutter") {
   package_name = "flutter"
 
   disable_analysis = true

packages/flutter_test/BUILD.gn

diff --git a/packages/flutter_test/BUILD.gn b/packages/flutter_test/BUILD.gn
index 3def0d5..00153ec 100644
--- a/packages/flutter_test/BUILD.gn
+++ b/packages/flutter_test/BUILD.gn
@@ -2,9 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//build/dart/dart_package.gni")
+import("//build/dart/dart_library.gni")
 
-dart_package("flutter_test") {
+dart_library("flutter_test") {
   package_name = "flutter_test"
 
   disable_analysis = true

packages/flutter_tools/BUILD.gn

diff --git a/packages/flutter_tools/BUILD.gn b/packages/flutter_tools/BUILD.gn
index 0cb475c..09085bd 100644
--- a/packages/flutter_tools/BUILD.gn
+++ b/packages/flutter_tools/BUILD.gn
@@ -2,10 +2,10 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//build/dart/dart_package.gni")
+import("//build/dart/dart_library.gni")
 import("//build/dart/dart_tool.gni")
 
-dart_package("flutter_tools") {
+dart_library("flutter_tools") {
   package_name = "flutter_tools"
 
   disable_analysis = true

packages/flutter_tools/lib/src/commands/fuchsia_reload.dart

diff --git a/packages/flutter_tools/lib/src/commands/fuchsia_reload.dart b/packages/flutter_tools/lib/src/commands/fuchsia_reload.dart
index dc5d573..273aa72 100644
--- a/packages/flutter_tools/lib/src/commands/fuchsia_reload.dart
+++ b/packages/flutter_tools/lib/src/commands/fuchsia_reload.dart
@@ -328,7 +328,7 @@
     if (!_fileExists(_target))
       throwToolExit('Couldn\'t find application entry point at $_target.');
 
-    final String packagesFileName = '${_projectName}_dart_package.packages';
+    final String packagesFileName = '${_projectName}_dart_library.packages';
     _dotPackagesPath = '$_fuchsiaRoot/out/$_buildType/dartlang/gen/$_projectRoot/$packagesFileName';
     if (!_fileExists(_dotPackagesPath))
       throwToolExit('Couldn\'t find .packages file at $_dotPackagesPath.');