Rename mash_shell to mash_session.

mash/shell/BUILD.gn

Index: mash/shell/BUILD.gn
diff --git a/mash/shell/BUILD.gn b/mash/shell/BUILD.gn
deleted file mode 100644
index ffe637b4926dc3c37b500522de4bd43efb749530..0000000000000000000000000000000000000000
--- a/mash/shell/BUILD.gn
+++ /dev/null
@@ -1,60 +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("//build/config/ui.gni")
-import("//mojo/public/mojo_application.gni")
-import("//mojo/public/mojo_application_manifest.gni")
-import("//mojo/public/tools/bindings/mojom.gni")
-import("//tools/grit/repack.gni")
-
-source_set("lib") {
-  sources = [
-    "shell_application_delegate.cc",
-    "shell_application_delegate.h",
-  ]
-
-  deps = [
-    "//base",
-    "//mash/login/public/interfaces",
-    "//mash/shell/public/interfaces",
-    "//mojo/common",
-    "//mojo/public/cpp/bindings",
-    "//mojo/shell/public/cpp",
-    "//mojo/shell/public/cpp:sources",
-  ]
-
-  data_deps = [
-    "//ash/mus",
-    "//mash/browser_driver",
-    "//mash/quick_launch",
-    "//mash/wm",
-  ]
-}
-
-mojo_native_application("shell") {
-  output_name = "mash_shell"
-
-  sources = [
-    "main.cc",
-  ]
-
-  deps = [
-    ":lib",
-    "//base",
-    "//mash/shell/public/interfaces",
-    "//mojo/common",
-    "//mojo/public/cpp/bindings",
-    "//mojo/shell/public/cpp",
-    "//mojo/shell/public/cpp:sources",
-  ]
-
-  data_deps = [
-    ":manifest",
-  ]
-}
-
-mojo_application_manifest("manifest") {
-  application_name = "mash_shell"
-  source = "manifest.json"
-}