[flutter_tools] Ensure that global variables are easily identifiable (#47398)

packages/flutter_tools/lib/src/windows/build_windows.dart

diff --git a/packages/flutter_tools/lib/src/windows/build_windows.dart b/packages/flutter_tools/lib/src/windows/build_windows.dart
index 2f0644f..55e4b77 100644
--- a/packages/flutter_tools/lib/src/windows/build_windows.dart
+++ b/packages/flutter_tools/lib/src/windows/build_windows.dart
@@ -4,12 +4,11 @@
 
 import '../artifacts.dart';
 import '../base/common.dart';
-import '../base/file_system.dart';
 import '../base/logger.dart';
 import '../base/process.dart';
 import '../build_info.dart';
 import '../cache.dart';
-import '../globals.dart';
+import '../globals.dart' as globals;
 import '../project.dart';
 import '../reporting/reporting.dart';
 import 'msbuild_utils.dart';
@@ -26,11 +25,11 @@
   if (target != null) {
     environment['FLUTTER_TARGET'] = target;
   }
-  if (artifacts is LocalEngineArtifacts) {
-    final LocalEngineArtifacts localEngineArtifacts = artifacts as LocalEngineArtifacts;
+  if (globals.artifacts is LocalEngineArtifacts) {
+    final LocalEngineArtifacts localEngineArtifacts = globals.artifacts as LocalEngineArtifacts;
     final String engineOutPath = localEngineArtifacts.engineOutPath;
-    environment['FLUTTER_ENGINE'] = fs.path.dirname(fs.path.dirname(engineOutPath));
-    environment['LOCAL_ENGINE'] = fs.path.basename(engineOutPath);
+    environment['FLUTTER_ENGINE'] = globals.fs.path.dirname(globals.fs.path.dirname(engineOutPath));
+    environment['LOCAL_ENGINE'] = globals.fs.path.basename(engineOutPath);
   }
   writePropertySheet(windowsProject.generatedPropertySheetFile, environment);
 
@@ -42,14 +41,14 @@
 
   if (!buildInfo.isDebug) {
     const String warning = '🚧 ';
-    printStatus(warning * 20);
-    printStatus('Warning: Only debug is currently implemented for Windows. This is effectively a debug build.');
-    printStatus('See https://github.com/flutter/flutter/issues/38477 for details and updates.');
-    printStatus(warning * 20);
-    printStatus('');
+    globals.printStatus(warning * 20);
+    globals.printStatus('Warning: Only debug is currently implemented for Windows. This is effectively a debug build.');
+    globals.printStatus('See https://github.com/flutter/flutter/issues/38477 for details and updates.');
+    globals.printStatus(warning * 20);
+    globals.printStatus('');
   }
 
-  final String buildScript = fs.path.join(
+  final String buildScript = globals.fs.path.join(
     Cache.flutterRoot,
     'packages',
     'flutter_tools',
@@ -60,7 +59,7 @@
   final String configuration = buildInfo.isDebug ? 'Debug' : 'Release';
   final String solutionPath = windowsProject.solutionFile.path;
   final Stopwatch sw = Stopwatch()..start();
-  final Status status = logger.startProgress(
+  final Status status = globals.logger.startProgress(
     'Building Windows application...',
     timeout: null,
   );
@@ -72,9 +71,9 @@
     result = await processUtils.stream(<String>[
       buildScript,
       vcvarsScript,
-      fs.path.basename(solutionPath),
+      globals.fs.path.basename(solutionPath),
       configuration,
-    ], workingDirectory: fs.path.dirname(solutionPath), trace: true);
+    ], workingDirectory: globals.fs.path.dirname(solutionPath), trace: true);
   } finally {
     status.cancel();
   }