Remove wm_flow, browser, nesting_app examples

examples/BUILD.gn

 # Copyright 2014 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")
 
 group("examples") {
   testonly = true
 
   deps = [
     "//examples/apptest",
-    "//examples/browser",
     "//examples/content_handler_demo",
     "//examples/dart",
     "//examples/echo",
     "//examples/echo_terminal",
     "//examples/embedded_app",
     "//examples/forwarding_content_handler",
     "//examples/ganesh_app",
     "//examples/http_handler",
     "//examples/indirect_service",
     "//examples/keyboard_client",
     "//examples/moterm_example_app",
     "//examples/native_run_app",
-    "//examples/nesting_app",
     "//examples/nfc_sender",
     "//examples/notification_generator",
     "//examples/png_viewer",
     "//examples/recursive_content_handler",
     "//examples/spinning_cube",
     "//examples/tiny",
     "//examples/trace_me",
     "//examples/wget",
   ]
 
   if (!is_android) {
     deps += [ "//examples/pdf_viewer" ]
   }
 
   if (is_android) {
     deps += [
       "//examples/device_name",
       "//examples/java_android/example_service",
       "//examples/java_android/echo",
     ]
   }
 
   if (is_linux || is_android) {
-    deps += [
-      "//examples/surfaces_app",
-      "//examples/window_manager",
-      "//examples/wm_flow",
-    ]
+    deps += [ "//examples/surfaces_app" ]
   }
 
   if (defined(go_build_tool) && go_build_tool != "") {
     deps += [ "//examples/go" ]
     if (is_android) {
       deps += [ "//examples/bank_app" ]
     }
   }
 
   if (is_linux && !is_fnl) {
     deps += [ "//examples/python" ]
   }
 }