Remove mojo::edk::test::ScopedIPCSupport

mojo/edk/system/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/nacl/config.gni")
 import("//testing/test.gni")
 import("../../../mojo/public/tools/bindings/mojom.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 60 matching lines @@
     "watcher.cc",
     "watcher.h",
     "watcher_set.cc",
     "watcher_set.h",
   ]
 
   defines = [ "MOJO_SYSTEM_IMPL_IMPLEMENTATION" ]
 
   public_deps = [
     "//mojo/edk/embedder",
-    "//mojo/edk/embedder:delegates",
     "//mojo/edk/embedder:platform",
     "//mojo/edk/system/ports",
     "//mojo/public/c/system",
     "//mojo/public/cpp/system",
   ]
 
   deps = [
     "//base",
   ]
 
@@ skipping 114 matching lines @@
       ":test_utils",
       "//base",
       "//base/test:test_support",
       "//mojo/edk/system",
       "//mojo/edk/test:run_all_perftests",
       "//mojo/edk/test:test_support",
       "//testing/gtest",
     ]
   }
 }