Hide AXPlatformNode on ChromeOS.

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")
 import("//ui/base/ui_features.gni")
 import("//ui/ozone/ozone.gni")
 import("//ui/vector_icons/vector_icons.gni")
@@ skipping 22 matching lines @@
     icons += [
       "combobox_arrow_mac_enabled.icon",
       "combobox_arrow_mac_disabled.icon",
     ]
   }
 }
 
 component("views") {
   all_dependent_configs = [ ":flags" ]
   sources = [
-    "accessibility/native_view_accessibility.cc",
     "accessibility/native_view_accessibility.h",
-    "accessibility/native_view_accessibility_mac.h",
-    "accessibility/native_view_accessibility_mac.mm",
-    "accessibility/native_view_accessibility_win.cc",
-    "accessibility/native_view_accessibility_win.h",
     "accessible_pane_view.cc",
     "accessible_pane_view.h",
     "animation/bounds_animator.cc",
     "animation/bounds_animator.h",
     "animation/flood_fill_ink_drop_ripple.cc",
     "animation/flood_fill_ink_drop_ripple.h",
     "animation/ink_drop.cc",
     "animation/ink_drop.h",
     "animation/ink_drop_animation_ended_reason.cc",
     "animation/ink_drop_animation_ended_reason.h",
@@ skipping 597 matching lines @@
       "//ui/accelerated_widget_mac",
       "//ui/events:dom_keycode_converter",
     ]
     libs = [
       "AppKit.framework",
       "CoreGraphics.framework",
       "Foundation.framework",
       "QuartzCore.framework",  # Required by bridged_native_widget.mm.
     ]
   }
+
+  if (has_native_accessibility) {
+    sources += [
+      "accessibility/native_view_accessibility_base.cc",
+      "accessibility/native_view_accessibility_base.h",
+      "accessibility/native_view_accessibility_mac.h",
+      "accessibility/native_view_accessibility_mac.mm",
+      "accessibility/native_view_accessibility_win.cc",
+      "accessibility/native_view_accessibility_win.h",
+    ]
+  } else {
+    sources += [ "accessibility/native_view_accessibility_stub.cc" ]
+  }
 }
 
 static_library("test_support_internal") {
   testonly = true
   sources = [
     "animation/test/flood_fill_ink_drop_ripple_test_api.cc",
     "animation/test/flood_fill_ink_drop_ripple_test_api.h",
     "animation/test/ink_drop_highlight_test_api.cc",
     "animation/test/ink_drop_highlight_test_api.h",
     "animation/test/ink_drop_host_view_test_api.cc",
@@ skipping 147 matching lines @@
   sources = [
     "test/native_widget_factory_desktop.cc",
   ]
 }
 
 # This target contains the unit tests that are shared between views_unittests
 # and views_mus_unittests.
 source_set("views_unittests_sources") {
   testonly = true
   sources = [
-    "accessibility/native_view_accessibility_unittest.cc",
     "accessibility/native_view_accessibility_win_unittest.cc",
     "accessible_pane_view_unittest.cc",
     "animation/bounds_animator_unittest.cc",
     "animation/flood_fill_ink_drop_ripple_unittest.cc",
     "animation/ink_drop_highlight_unittest.cc",
     "animation/ink_drop_host_view_unittest.cc",
     "animation/ink_drop_impl_unittest.cc",
     "animation/ink_drop_ripple_unittest.cc",
     "animation/ink_drop_unittest.cc",
     "animation/square_ink_drop_ripple_unittest.cc",
@@ skipping 104 matching lines @@
       "//third_party/iaccessible2",
       "//third_party/wtl",
     ]
     libs = [
       "imm32.lib",
       "oleacc.lib",
       "comctl32.lib",
     ]
   }
 
+  if (has_native_accessibility) {
+    sources += [ "accessibility/native_view_accessibility_unittest.cc" ]
+  }
+
   if (use_x11) {
     configs += [
       "//build/config/linux:x11",
       "//build/config/linux:xext",
     ]
     public_deps += [
       "//ui/events/devices",
       "//ui/events/platform/x11",
       "//ui/gfx/x",
     ]
@@ skipping 84 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",
     ]
   }
 }