mash: Rename browser_driver to app_driver.

chrome/app/mash/BUILD.gn

Index: chrome/app/mash/BUILD.gn
diff --git a/chrome/app/mash/BUILD.gn b/chrome/app/mash/BUILD.gn
index 4dc43ff58e3df28c46d715eba318eb1e6ec2a567..053fe4b83ae69a799925721435d8238d6c422c64 100644
--- a/chrome/app/mash/BUILD.gn
+++ b/chrome/app/mash/BUILD.gn
@@ -15,7 +15,7 @@ source_set("mash") {
     "//base:i18n",
     "//components/mus:lib",
     "//content/public/common",
-    "//mash/browser_driver:lib",
+    "//mash/app_driver:lib",
     "//mash/quick_launch:lib",
     "//mash/session:lib",
     "//mash/task_viewer:lib",
@@ -45,15 +45,15 @@ mojo_application_manifest("manifest") {
   deps = [
     "//ash/mus:manifest",
     "//components/mus:manifest",
-    "//mash/browser_driver:manifest",
+    "//mash/app_driver:manifest",
     "//mash/quick_launch:manifest",
     "//mash/session:manifest",
     "//mash/task_viewer:manifest",
     "//mash/wm:manifest",
   ]
   packaged_applications = [
+    "app_driver",
     "ash_sysui",
-    "browser_driver",
     "desktop_wm",
     "mash_session",
     "mus",