MacViews: Clip contents for non-rectangular windows.

ui/views/views.gyp

 # Copyright (c) 2012 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.
 {
   'variables': {
     'chromium_code': 1,
     # Sources lists shared with GN build.
     'views_sources': [
       'accessibility/native_view_accessibility.cc',
       'accessibility/native_view_accessibility.h',
@@ skipping 770 matching lines @@
             ['OS == "win"', {
               'sources': [ '<@(views_desktop_aura_win_sources)' ],
             }],
             ['use_ozone==1', {
               'sources': [ '<@(views_desktop_aura_ozone_sources)' ],
             }],
           ],
         }],
         ['OS=="mac"', {
           'dependencies': [
+            '../../third_party/google_toolbox_for_mac/google_toolbox_for_mac.gyp:google_toolbox_for_mac',
             '../accelerated_widget_mac/accelerated_widget_mac.gyp:accelerated_widget_mac',
           ],
           'link_settings': {
             'libraries': [
               # Required by bridged_native_widget.mm.
               '$(SDKROOT)/System/Library/Frameworks/QuartzCore.framework',
             ],
+            'conditions': [
+              ['component=="static_library"', {
+                # Needed to link to Obj-C static libraries.

[karandeepb, 2016/03/04 03:01:56]

I am not sure if this needs to be added to a gn file as well. The trybots pass
without it. Also, I can't seem to find a direct analogous of link_settings in
gn. 

[tapted, 2016/03/04 04:15:01]

ldflags += [ "-Wl,-ObjC" ]

would probably do it.

I think the Mac-GN trybot [assuming there is one] currently just builds, and
doesn't try to run anything, which is why this probably hasn't come up in the
past.

Can you try running components_unittests in GN build locally on Mac, to see if
it's needed? 

(there might be an explosion of other problems, or components_unittests might
not even be built at all, but we should try not to leave problems for us later
on, since these errors are really hard to diagnose)

+                'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
+              }],
+            ],
           },
         }],
       ],
     }, # target_name: views
     {
       # GN version: //ui/views:test_support
       'target_name': 'views_test_support',
       'type': 'static_library',
       'dependencies': [
         '../../base/base.gyp:base',
@@ skipping 202 matching lines @@
                 '../aura/aura.gyp:aura',
                 '../wm/wm.gyp:wm',
               ],
             }],
           ],
         },  # target_name: macviews_interactive_ui_tests
       ],  # targets
     }],
   ],  # conditions
 }