MacViews: Clip contents for non-rectangular windows.

ui/views/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("views.gyp") ],
@@ skipping 114 matching lines @@
         sources += gypi_values.views_desktop_aura_ozone_sources
       }
       if (is_linux) {
         sources += gypi_values.views_desktop_aura_linux_sources
       }
     }
   }
 
   if (is_mac) {
     deps += [
+      "//third_party/google_toolbox_for_mac",
       "//ui/accelerated_widget_mac",
       "//ui/events:dom_keycode_converter",
     ]
     libs = [
       # Required by bridged_native_widget.mm.
       "QuartzCore.framework",
     ]
   }
 }
 
@@ skipping 166 matching lines @@
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/events:test_support",
       "//ui/gl:test_support",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }