Remove unnecessary dependencies on mojo/edk/system

skia/BUILD.gn

 # Copyright (c) 2013 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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 if (current_cpu == "arm") {
   import("//build/config/arm.gni")
 }
@@ skipping 714 matching lines @@
     "//testing/gtest",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 
   if (!is_ios) {
     sources += [ "public/interfaces/test/struct_traits_unittest.cc" ]
     deps += [
       # TODO: Fix this test to not depend on cc.
       "//cc:test_support",
-      "//mojo/edk/system",
       "//mojo/public/cpp/bindings",
       "//skia/public/interfaces:test_interfaces",
     ]
   }
 }
 
 if (!is_ios) {
   executable("image_operations_bench") {
     sources = [
       "ext/image_operations_bench.cc",
@@ skipping 15 matching lines @@
 
     deps = [
       ":skia",
       "//base",
       "//base/test:test_support",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
 }