Use more than double buffering in SoftwareOutputDeviceMac

content/test/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/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
@@ skipping 1052 matching lines @@
     "../browser/cache_storage/cache_storage_blob_to_disk_cache_unittest.cc",
     "../browser/cache_storage/cache_storage_cache_unittest.cc",
     "../browser/cache_storage/cache_storage_index_unittest.cc",
     "../browser/cache_storage/cache_storage_manager_unittest.cc",
     "../browser/cache_storage/cache_storage_operation_unittest.cc",
     "../browser/cache_storage/cache_storage_scheduler_unittest.cc",
     "../browser/child_process_security_policy_unittest.cc",
     "../browser/cocoa/system_hotkey_map_unittest.mm",
     "../browser/compositor/reflector_impl_unittest.cc",
     "../browser/compositor/software_browser_compositor_output_surface_unittest.cc",
+    "../browser/compositor/software_output_device_mac_unittest.mm",
     "../browser/compositor/software_output_device_ozone_unittest.cc",
     "../browser/devtools/devtools_http_handler_unittest.cc",
     "../browser/devtools/devtools_manager_unittest.cc",
     "../browser/devtools/protocol/tracing_handler_unittest.cc",
     "../browser/devtools/shared_worker_devtools_manager_unittest.cc",
     "../browser/dom_storage/dom_storage_area_unittest.cc",
     "../browser/dom_storage/dom_storage_context_impl_unittest.cc",
     "../browser/dom_storage/dom_storage_database_unittest.cc",
     "../browser/dom_storage/local_storage_context_mojo_unittest.cc",
     "../browser/dom_storage/session_storage_database_unittest.cc",
@@ skipping 598 matching lines @@
     deps += [ "//third_party/iaccessible2" ]
     libs = [ "dwrite.lib" ]
   }
   if (is_mac) {
     deps += [
       "//sandbox/mac:seatbelt",
       "//third_party/mozilla",
       "//third_party/ocmock",
       "//ui/accelerated_widget_mac",
     ]
+    libs = [ "IOSurface.framework" ]
   }
   if (is_chromeos) {
     deps += [ "//chromeos" ]
   }
   if (is_android) {
     sources += [
       "../browser/android/java/gin_java_method_invocation_helper_unittest.cc",
       "../browser/android/java/java_type_unittest.cc",
       "../browser/android/java/jni_helper_unittest.cc",
       "../browser/android/scoped_surface_request_manager_unittest.cc",
@@ skipping 126 matching lines @@
   if (is_android) {
     deps += [ "//testing/android/native_test:native_test_native_code" ]
   }
 }
 
 group("fuzzers") {
   deps = [
     "//content/test/fuzzer",
   ]
 }