Delete TestDisplaySnapshot and update tests.

ui/display/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")
 import("//testing/test.gni")
 
 component("display") {
   sources = [
     "android/screen_android.cc",
@@ skipping 108 matching lines @@
     sources -= [ "android/screen_android.cc" ]
   }
   if (is_mac) {
     libs = [
       "AppKit.framework",
       "CoreGraphics.framework",
     ]
   }
 }
 
-if (is_chromeos) {
-  component("test_util") {
-    output_name = "display_test_util"
-    sources = [
-      "chromeos/test/test_display_snapshot.cc",
-      "chromeos/test/test_display_snapshot.h",
-    ]
-
-    defines = [ "DISPLAY_IMPLEMENTATION" ]
-
-    public_deps = [
-      ":display",
-    ]
-    deps = [
-      "//base",
-      "//ui/display/types",
-      "//ui/gfx",
-      "//ui/gfx/geometry",
-    ]
-  }
-}
-
 static_library("test_support") {
   testonly = true
   sources = [
     "chromeos/test/action_logger.cc",
     "chromeos/test/action_logger.h",
     "chromeos/test/action_logger_util.cc",
     "chromeos/test/action_logger_util.h",
     "chromeos/test/test_display_layout_manager.cc",
     "chromeos/test/test_display_layout_manager.h",
     "chromeos/test/test_native_display_delegate.cc",
@@ skipping 52 matching lines @@
     "//base/test:run_all_unittests",
     "//base/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/display/types",
     "//ui/display/util",
     "//ui/gfx:test_support",
     "//ui/gfx/geometry",
   ]
 
-  if (is_chromeos) {
-    deps += [ ":test_util" ]
-  }
-
   if (use_aura) {
     sources -= [ "screen_unittest.cc" ]
   }
 
   if (is_android) {
     # Do not run display_change_notifier_unittest.cc on Android because it
     # does not compile display_observer.cc
     sources -= [ "display_change_notifier_unittest.cc" ]
   }
 
   if (is_chromeos && use_ozone) {
     sources -= [
       "chromeos/x11/display_util_x11_unittest.cc",
       "chromeos/x11/native_display_event_dispatcher_x11_unittest.cc",
     ]
   }
 }