Move mojo and mojom from mojo/public/dart to mojo/dart/packages

mojo/public/dart/mojom/BUILD.gn

Index: mojo/public/dart/mojom/BUILD.gn
diff --git a/mojo/public/dart/mojom/BUILD.gn b/mojo/public/dart/mojom/BUILD.gn
deleted file mode 100644
index 1a45b22887a7023ea3c332bf3abaff88ac13bd31..0000000000000000000000000000000000000000
--- a/mojo/public/dart/mojom/BUILD.gn
+++ /dev/null
@@ -1,28 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import("../rules.gni")
-
-dart_pkg("mojom") {
-  libs = [
-    "bin/mojom.dart",
-    "lib/src/generate.dart",
-    "lib/src/command_runner.dart",
-    "lib/src/commands/check.dart",
-    "lib/src/commands/gen.dart",
-    "lib/src/commands/mojom_command.dart",
-    "lib/src/commands/single.dart",
-    "lib/src/utils.dart",
-    "test/generate_test.dart",
-  ]
-  sources = [
-    "CHANGELOG.md",
-    "README.md",
-    "lib/src/mojom_finder.dart",
-    "pubspec.yaml",
-  ]
-  deps = [
-    "../third_party",
-  ]
-}