Rename mash_shell to mash_session.

chrome/app/mash/BUILD.gn

 # Copyright 2016 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("//mojo/public/mojo_application_manifest.gni")
 
 source_set("mash") {
   sources = [
     "mash_runner.cc",
     "mash_runner.h",
   ]
   deps = [
     "//ash/mus:lib",
     "//ash/resources",
     "//base:i18n",
     "//components/mus:lib",
     "//components/resource_provider:lib",
     "//content/public/common",
     "//mash/quick_launch:lib",
-    "//mash/shell:lib",
+    "//mash/session:lib",
     "//mash/wm:lib",
     "//mojo/shell",
     "//mojo/shell/background:lib",
     "//mojo/shell/public/cpp",
     "//mojo/shell/public/interfaces",
     "//mojo/shell/runner/common",
     "//mojo/shell/runner/host:child_process_base",
     "//mojo/shell/runner/host:lib",
     "//url",
   ]
   data_deps = [
     ":manifest",
   ]
 
   if (is_linux && !is_android) {
     deps += [ "//components/font_service:lib" ]
   }
 }
 
 mojo_application_manifest("manifest") {
   type = "exe"
   application_name = "chrome_mash"
   source = "chrome_mash_manifest.json"
   deps = [
     "//ash/mus:manifest",
     "//components/mus:manifest",
     "//components/resource_provider:manifest",
     "//mash/quick_launch:manifest",
-    "//mash/shell:manifest",
+    "//mash/session:manifest",
     "//mash/wm:manifest",
   ]
   packaged_applications = [
     "ash_sysui",
     "desktop_wm",
-    "mash_shell",
+    "mash_session",
     "mus",
     "quick_launch",
     "resource_provider",
   ]
 
   if (is_linux && !is_android) {
     deps += [ "//components/font_service:manifest" ]
     packaged_applications += [ "font_service" ]
   }
 }