Move ui/ozone/ozone/gni to build/config/ozone/gni

This CL moves ui/ozone/ozone.gni to build/config/ui.gni because a few
args in ui/ozone/ozone.gni will be used by toolchain files under
build/, and the reason is that in a LaCrOS build, ozone_platform is set
to use Wayland, and meanwhile, we build an ash-chrome in an alternate
toolchain, which requires re-setting the ozone_platform back to empty.
For more details, please see:
https://chromium-review.googlesource.com/c/chromium/src/+/2416999

Bug: 1129223
Change-Id: I8c1e94c568165de2a5c26ca103fa84a60eb68b21
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427423
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#814006}

build/config/OWNERS

@@ -2,3 +2,4 @@ dpranke@google.com
 scottmg@chromium.org
 
 per-file *jumbo*=bratell.d@gmail.com
+per-file ozone.gni=file://ui/ozone/OWNERS

build/config/ozone.gni

@@ -0,0 +1,116 @@
+# Copyright 2020 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/chromecast_build.gni")
+import("//build/config/ui.gni")
+import("//build/toolchain/toolchain.gni")
+
+declare_args() {
+  # Ozone extra platforms file path. Can be overridden to build out of
+  # tree ozone platforms.
+  ozone_extra_path = "//ui/ozone/ozone_extra.gni"
+
+  # Select platforms automatically. Turn this off for manual control.
+  ozone_auto_platforms = use_ozone
+
+  # TODO(petermcneeley): Backwards compatiblity support for VM images.
+  # Remove when deprecated. (https://crbug.com/1122009)
+  ozone_platform_gbm = -1
+}
+
+declare_args() {
+  # The platform that will used at runtime by default. This can be overridden
+  # with the command line flag --ozone-platform=<platform>.
+  ozone_platform = ""
+
+  # Compile the 'cast' platform.
+  ozone_platform_cast = false
+
+  # Compile the 'drm' platform.
+  ozone_platform_drm = false
+
+  # Compile the 'headless' platform.
+  ozone_platform_headless = false
+
+  # Compile the 'scenic' platform.
+  ozone_platform_scenic = false
+
+  # Compile the 'x11' platform.
+  ozone_platform_x11 = false
+
+  # Compile the 'wayland' platform.
+  ozone_platform_wayland = false
+
+  # Compile the 'windows' platform.
+  ozone_platform_windows = false
+
+  if (ozone_auto_platforms) {
+    # Use headless as the default platform unless modified below.
+    ozone_platform = "headless"
+    ozone_platform_headless = true
+
+    if (is_cast_audio_only) {
+      # Just use headless for audio-only Cast platforms.
+    } else if (is_chromecast && !is_fuchsia) {
+      # Enable the Cast ozone platform on all A/V Cast builds except Fuchsia.
+      ozone_platform_cast = true
+
+      # For visual desktop Chromecast builds, override the default "headless"
+      # platform with --ozone-platform=x11.
+      # TODO(halliwell): Create a libcast_graphics implementation for desktop
+      # using X11, and disable this platform.
+      if (is_cast_desktop_build && !is_cast_audio_only) {
+        ozone_platform_x11 = true
+      } else {
+        ozone_platform = "cast"
+      }
+    } else if (is_chromeos) {
+      ozone_platform = "x11"
+      ozone_platform_drm = true
+      ozone_platform_x11 = true
+    } else if (is_linux) {
+      ozone_platform = "x11"
+      ozone_platform_wayland = true
+      ozone_platform_x11 = true
+    } else if (is_win) {
+      ozone_platform = "windows"
+      ozone_platform_windows = true
+    } else if (is_fuchsia) {
+      ozone_platform = "scenic"
+      ozone_platform_scenic = true
+    }
+  }
+
+  # TODO(petermcneeley): Backwards compatiblity support for VM images.
+  # Remove when deprecated. (https://crbug.com/1122009)
+  if (ozone_platform_gbm != -1) {
+    ozone_platform_drm = ozone_platform_gbm
+  }
+}
+
+import(ozone_extra_path)
+
+_ozone_extra_directory = get_path_info(ozone_extra_path, "dir")
+
+# Extra paths to add to targets visibility list.
+ozone_external_platform_visibility = [ "$_ozone_extra_directory/*" ]
+
+if (is_a_target_toolchain) {
+  assert(use_ozone || !(ozone_platform_cast || ozone_platform_drm ||
+                            ozone_platform_headless || ozone_platform_x11 ||
+                            ozone_platform_wayland || ozone_platform_windows ||
+                            ozone_platform_scenic),
+         "Must set use_ozone to select ozone platforms")
+}
+
+# TODO(petermcneeley): Backwards compatiblity support for VM images.
+# Remove when deprecated. (https://crbug.com/1122009)
+
+assert(ozone_platform_gbm == -1 || ozone_platform_drm == ozone_platform_gbm)
+
+ozone_platform_gbm = ozone_platform_drm
+
+if (ozone_platform == "gbm") {
+  ozone_platform = "drm"
+}

chrome/browser/ui/BUILD.gn

@@ -9,6 +9,7 @@ import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/gtk/gtk.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//chrome/browser/buildflags.gni")
 import("//chrome/common/features.gni")
@@ -25,7 +26,6 @@ import("//printing/buildflags/buildflags.gni")
 import("//rlz/buildflags/buildflags.gni")
 import("//third_party/protobuf/proto_library.gni")
 import("//ui/base/ui_features.gni")
-import("//ui/ozone/ozone.gni")
 import("//ui/views/features.gni")
 
 # Use a static library here because many test binaries depend on this but don't

components/exo/wayland/BUILD.gn

@@ -2,11 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//gpu/vulkan/features.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
-import("//ui/ozone/ozone.gni")
 
 source_set("wayland") {
   sources = [

content/shell/BUILD.gn

@@ -5,6 +5,7 @@
 import("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/gtk/gtk.gni")
+import("//build/config/ozone.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/console_app.gni")
@@ -16,7 +17,6 @@ import("//ppapi/buildflags/buildflags.gni")
 import("//tools/grit/grit_rule.gni")
 import("//tools/grit/repack.gni")
 import("//tools/v8_context_snapshot/v8_context_snapshot.gni")
-import("//ui/ozone/ozone.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
 } else if (is_mac) {

gpu/vulkan/BUILD.gn

@@ -4,9 +4,9 @@
 
 import("//build/buildflag_header.gni")
 import("//build/config/dcheck_always_on.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
-import("//ui/ozone/ozone.gni")
 import("features.gni")
 
 # Generate a buildflag header for compile-time checking of Vulkan support.

ui/base/BUILD.gn

@@ -7,6 +7,7 @@ import("//build/config/compiler/compiler.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/linux/gtk/gtk.gni")
 import("//build/config/linux/pangocairo/pangocairo.gni")
+import("//build/config/ozone.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//build/util/branding.gni")
@@ -14,7 +15,6 @@ import("//components/system_media_controls/linux/buildflags/buildflags.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 import("//ui/base/ui_features.gni")
-import("//ui/ozone/ozone.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")

ui/base/clipboard/BUILD.gn

@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("///ui/ozone/ozone.gni")
+import("///build/config/ozone.gni")
 import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/ui.gni")
 

ui/base/x/BUILD.gn

@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 import("//build/config/linux/gtk/gtk.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_x11)
 

ui/chromeos/events/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(is_chromeos)
 

ui/events/BUILD.gn

@@ -3,10 +3,10 @@
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
-import("//ui/ozone/ozone.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")

ui/events/devices/x11/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_x11)
 

ui/events/keycodes/BUILD.gn

@@ -2,9 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//ui/base/ui_features.gni")
-import("//ui/ozone/ozone.gni")
 
 source_set("xkb") {
   sources = [

ui/events/platform/x11/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_x11)
 

ui/gfx/linux/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_drm || ozone_platform_wayland)
 

ui/gfx/x/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_x11)
 

ui/gl/BUILD.gn

@@ -6,10 +6,10 @@ import("//build/buildflag_header.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/linux/pkg_config.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/gl/features.gni")
-import("//ui/ozone/ozone.gni")
 
 declare_args() {
   # Whether service side logging (actual calls into the GL driver) is enabled

ui/gtk/BUILD.gn

@@ -6,9 +6,9 @@ assert(is_linux || is_chromeos, "This file should only be referenced on Linux")
 
 import("//build/config/features.gni")
 import("//build/config/linux/gtk/gtk.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//printing/buildflags/buildflags.gni")
-import("//ui/ozone/ozone.gni")
 
 component("gtk_ui_delegate") {
   public = [ "gtk_ui_delegate.h" ]

ui/gtk/x/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_x11)
 

ui/ozone/BUILD.gn

@@ -3,10 +3,10 @@
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//gpu/vulkan/features.gni")
 import("//testing/test.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_ozone)
 

ui/ozone/common/BUILD.gn

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_ozone)
 

ui/ozone/ozone.gni

@@ -2,115 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//build/config/chromecast_build.gni")
-import("//build/config/ui.gni")
-import("//build/toolchain/toolchain.gni")
-
-declare_args() {
-  # Ozone extra platforms file path. Can be overridden to build out of
-  # tree ozone platforms.
-  ozone_extra_path = "//ui/ozone/ozone_extra.gni"
-
-  # Select platforms automatically. Turn this off for manual control.
-  ozone_auto_platforms = use_ozone
-
-  # TODO(petermcneeley): Backwards compatiblity support for VM images.
-  # Remove when deprecated. (https://crbug.com/1122009)
-  ozone_platform_gbm = -1
-}
-
-declare_args() {
-  # The platform that will used at runtime by default. This can be overridden
-  # with the command line flag --ozone-platform=<platform>.
-  ozone_platform = ""
-
-  # Compile the 'cast' platform.
-  ozone_platform_cast = false
-
-  # Compile the 'drm' platform.
-  ozone_platform_drm = false
-
-  # Compile the 'headless' platform.
-  ozone_platform_headless = false
-
-  # Compile the 'scenic' platform.
-  ozone_platform_scenic = false
-
-  # Compile the 'x11' platform.
-  ozone_platform_x11 = false
-
-  # Compile the 'wayland' platform.
-  ozone_platform_wayland = false
-
-  # Compile the 'windows' platform.
-  ozone_platform_windows = false
-
-  if (ozone_auto_platforms) {
-    # Use headless as the default platform unless modified below.
-    ozone_platform = "headless"
-    ozone_platform_headless = true
-
-    if (is_cast_audio_only) {
-      # Just use headless for audio-only Cast platforms.
-    } else if (is_chromecast && !is_fuchsia) {
-      # Enable the Cast ozone platform on all A/V Cast builds except Fuchsia.
-      ozone_platform_cast = true
-
-      # For visual desktop Chromecast builds, override the default "headless"
-      # platform with --ozone-platform=x11.
-      # TODO(halliwell): Create a libcast_graphics implementation for desktop
-      # using X11, and disable this platform.
-      if (is_cast_desktop_build && !is_cast_audio_only) {
-        ozone_platform_x11 = true
-      } else {
-        ozone_platform = "cast"
-      }
-    } else if (is_chromeos) {
-      ozone_platform = "x11"
-      ozone_platform_drm = true
-      ozone_platform_x11 = true
-    } else if (is_linux) {
-      ozone_platform = "x11"
-      ozone_platform_wayland = true
-      ozone_platform_x11 = true
-    } else if (is_win) {
-      ozone_platform = "windows"
-      ozone_platform_windows = true
-    } else if (is_fuchsia) {
-      ozone_platform = "scenic"
-      ozone_platform_scenic = true
-    }
-  }
-
-  # TODO(petermcneeley): Backwards compatiblity support for VM images.
-  # Remove when deprecated. (https://crbug.com/1122009)
-  if (ozone_platform_gbm != -1) {
-    ozone_platform_drm = ozone_platform_gbm
-  }
-}
-
-import(ozone_extra_path)
-
-_ozone_extra_directory = get_path_info(ozone_extra_path, "dir")
-
-# Extra paths to add to targets visibility list.
-ozone_external_platform_visibility = [ "$_ozone_extra_directory/*" ]
-
-if (is_a_target_toolchain) {
-  assert(use_ozone || !(ozone_platform_cast || ozone_platform_drm ||
-                            ozone_platform_headless || ozone_platform_x11 ||
-                            ozone_platform_wayland || ozone_platform_windows ||
-                            ozone_platform_scenic),
-         "Must set use_ozone to select ozone platforms")
-}
-
-# TODO(petermcneeley): Backwards compatiblity support for VM images.
-# Remove when deprecated. (https://crbug.com/1122009)
-
-assert(ozone_platform_gbm == -1 || ozone_platform_drm == ozone_platform_gbm)
-
-ozone_platform_gbm = ozone_platform_drm
-
-if (ozone_platform == "gbm") {
-  ozone_platform = "drm"
-}
+import("//build/config/ozone.gni")
+# TODO(crbug.com/1129223): Remove this place holder once Angle project stops
+# referencing to this file.
+# https://source.chromium.org/chromium/chromium/src/+/master:third_party/angle/gni/angle.gni;l=43;drc=2d74170f899b91793bd7967184b4d7d216a3e9ec

ui/ozone/platform/cast/BUILD.gn

@@ -3,11 +3,11 @@
 # found in the LICENSE file.
 
 import("//build/config/chromecast_build.gni")
-import("//ui/ozone/ozone.gni")
+import("//build/config/ozone.gni")
 
 visibility = [
-  "//ui/ozone/*",
   "//chromecast/*",
+  "//ui/ozone/*",
 ]
 
 # TODO(slan): gn check needs deps on ozone and media to pass. Correct this.

ui/ozone/platform/drm/BUILD.gn

@@ -4,8 +4,8 @@
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/linux/pkg_config.gni")
+import("//build/config/ozone.gni")
 import("//gpu/vulkan/features.gni")
-import("//ui/ozone/ozone.gni")
 
 visibility = [ "//ui/ozone/*" ]
 

ui/ozone/platform/wayland/wayland.gni

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
-import("//ui/ozone/ozone.gni")
 
 declare_args() {
   # Checks if Wayland must be compiled with dmabuf/gbm feature, which allows a

ui/platform_window/x11/BUILD.gn

@@ -2,9 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
-import("//ui/ozone/ozone.gni")
 
 assert(use_x11 || ozone_platform_x11)
 

ui/views/BUILD.gn

@@ -4,11 +4,11 @@
 
 import("//build/buildflag_header.gni")
 import("//build/config/features.gni")
+import("//build/config/ozone.gni")
 import("//build/config/ui.gni")
 import("//components/vector_icons/vector_icons.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
-import("//ui/ozone/ozone.gni")
 import("//ui/views/features.gni")
 
 assert(toolkit_views)