Reorganize some pub libraries.

sdk/lib/_internal/pub/lib/src/source/git.dart

Index: sdk/lib/_internal/pub/lib/src/source/git.dart
diff --git a/sdk/lib/_internal/pub/lib/src/git_source.dart b/sdk/lib/_internal/pub/lib/src/source/git.dart
similarity index 97%
rename from sdk/lib/_internal/pub/lib/src/git_source.dart
rename to sdk/lib/_internal/pub/lib/src/source/git.dart
index bccae276d01fb515cdb1c33c9dc6af98af3a0fa9..c623cdbeb824dacd7821d705f03b90ae20194174 100644
--- a/sdk/lib/_internal/pub/lib/src/git_source.dart
+++ b/sdk/lib/_internal/pub/lib/src/source/git.dart
@@ -2,19 +2,19 @@
 // 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.
 
-library git_source;
+library pub.source.git;
 
 import 'dart:async';
 
 import 'package:pathos/path.dart' as path;
 
-import 'git.dart' as git;
-import 'io.dart';
-import 'log.dart' as log;
-import 'package.dart';
-import 'source.dart';
-import 'source_registry.dart';
-import 'utils.dart';
+import '../git.dart' as git;
+import '../io.dart';
+import '../log.dart' as log;
+import '../package.dart';
+import '../source.dart';
+import '../source_registry.dart';
+import '../utils.dart';
 
 /// A package source that installs packages from Git repos.
 class GitSource extends Source {