Add missing context bits to Fuchsia tools. (#10891)

diff --git a/packages/flutter_tools/bin/fuchsia_builder.dart b/packages/flutter_tools/bin/fuchsia_builder.dart
index 99f08cc..e0d1ff8 100644
--- a/packages/flutter_tools/bin/fuchsia_builder.dart
+++ b/packages/flutter_tools/bin/fuchsia_builder.dart
@@ -15,6 +15,7 @@
 import '../lib/src/base/logger.dart';
 import '../lib/src/base/os.dart';
 import '../lib/src/base/platform.dart';
+import '../lib/src/base/terminal.dart';
 import '../lib/src/cache.dart';
 import '../lib/src/flx.dart';
 import '../lib/src/globals.dart';
@@ -51,6 +52,7 @@
     context.putIfAbsent(Config, () => new Config());
     context.putIfAbsent(OperatingSystemUtils, () => new OperatingSystemUtils());
     context.putIfAbsent(Usage, () => new Usage());
+    context.putIfAbsent(AnsiTerminal, () => new AnsiTerminal());
     return run(args);
   });
 }
diff --git a/packages/flutter_tools/bin/fuchsia_tester.dart b/packages/flutter_tools/bin/fuchsia_tester.dart
index d4bd938..8abd2c2 100644
--- a/packages/flutter_tools/bin/fuchsia_tester.dart
+++ b/packages/flutter_tools/bin/fuchsia_tester.dart
@@ -17,6 +17,7 @@
 import '../lib/src/base/logger.dart';
 import '../lib/src/base/os.dart';
 import '../lib/src/base/platform.dart';
+import '../lib/src/base/terminal.dart';
 import '../lib/src/cache.dart';
 import '../lib/src/dart/package_map.dart';
 import '../lib/src/globals.dart';
@@ -47,6 +48,7 @@
     context.putIfAbsent(Config, () => new Config());
     context.putIfAbsent(OperatingSystemUtils, () => new OperatingSystemUtils());
     context.putIfAbsent(Usage, () => new Usage());
+    context.putIfAbsent(AnsiTerminal, () => new AnsiTerminal());
     return run(args);
   });
 }