Rename TranslateUri to UriTranslator, rename files, extract Impl.

pkg/front_end/test/fasta/translate_uri_test.dart

Index: pkg/front_end/test/fasta/translate_uri_test.dart
diff --git a/pkg/front_end/test/fasta/translate_uri_test.dart b/pkg/front_end/test/fasta/translate_uri_test.dart
deleted file mode 100644
index 139936d51552961b3a0e3a21922d8f2388c720a8..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/translate_uri_test.dart
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'package:front_end/src/fasta/translate_uri.dart';
-import 'package:test/test.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-
-main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(TranslateUriTest);
-  });
-}
-
-@reflectiveTest
-class TranslateUriTest {
-  void test_isPlatformImplementation() {
-    var translator = new TranslateUri({
-      'core': Uri.parse('file:///sdk/core/core.dart'),
-      'math': Uri.parse('file:///sdk/math/math.dart')
-    }, {}, {});
-
-    bool isPlatform(String uriStr) {
-      var uri = Uri.parse(uriStr);
-      return translator.isPlatformImplementation(uri);
-    }
-
-    expect(isPlatform('dart:core/string.dart'), isTrue);
-    expect(isPlatform('dart:core'), isFalse);
-    expect(isPlatform('dart:_builtin'), isTrue);
-    expect(isPlatform('file:///sdk/math/math.dart'), isFalse);
-  }
-
-  void test_translate_dart() {
-    var translator = new TranslateUri({
-      'core': Uri.parse('file:///sdk/core/core.dart'),
-      'math': Uri.parse('file:///sdk/math/math.dart')
-    }, {}, {});
-
-    expect(translator.translate(Uri.parse('dart:core')),
-        Uri.parse('file:///sdk/core/core.dart'));
-    expect(translator.translate(Uri.parse('dart:core/string.dart')),
-        Uri.parse('file:///sdk/core/string.dart'));
-
-    expect(translator.translate(Uri.parse('dart:math')),
-        Uri.parse('file:///sdk/math/math.dart'));
-  }
-}