Pin apps from prefs on the mash shelf.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 92157b9c06e30c5da7e0ff768c24a521f7247ae7..543944d41da3742f70018a48178591627779e878 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -598,8 +598,6 @@ source_set("browser") {
     # These files are only built in a GN build because they bring in
     # dependencies that don't build with GYP.
     sources += [
-      "ui/ash/launcher/chrome_mash_shelf_controller.cc",
-      "ui/ash/launcher/chrome_mash_shelf_controller.h",
       "ui/views/frame/browser_frame_mus.cc",
       "ui/views/frame/browser_frame_mus.h",
       "ui/views/frame/browser_non_client_frame_view_mus.cc",
@@ -607,15 +605,9 @@ source_set("browser") {
     ]
     deps += [
       "//components/mus/public/cpp",
-      "//components/prefs",
       "//content/public/common",
-      "//mash/shelf/public/interfaces",
-      "//services/shell/runner/common",
-      "//skia/public",
       "//ui/aura",
       "//ui/compositor",
-      "//ui/keyboard",
-      "//ui/keyboard:keyboard_with_content",
       "//ui/views/mus:for_component",
     ]
     defines += [ "MOJO_SHELL_CLIENT" ]