LaCrOS: Replace defined(OS_CHROMEOS) with BUILDFLAG(IS_CHROMEOS_ASH)

The change is mostly mechanical replacing defined(OS_CHROMEOS) with
BUILDFLAG(IS_CHROMEOS_ASH) and GN variable is_chromeos with
is_chromeos_ash with some special cases (For those cases please
refer to http://go/lacros-macros).

The patch is made in preparation to switching lacros build from
target_os=linux to target_os=chromeos. This will prevent lacros from
changing behaviour after the switch.

Bug: 1052397
Change-Id: I3cfc0267c733659383f007e19cc98ec174ed1026
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2592220Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Yuta Hijikata <ythjkt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837887}

ui/base/ime/fake_text_input_client.cc

@@ -4,6 +4,7 @@
 
 #include "ui/base/ime/fake_text_input_client.h"
 
+#include "build/chromeos_buildflags.h"
 #include "ui/events/event_constants.h"
 #include "ui/gfx/geometry/rect.h"
 

ui/compositor/BUILD.gn

@@ -168,6 +168,7 @@ static_library("test_support") {
   public_deps = [ ":compositor" ]
   deps = [
     "//base/test:test_support",
+    "//build:chromeos_buildflags",
     "//cc",
     "//cc:test_support",
     "//components/viz/host",
@@ -251,6 +252,7 @@ test("compositor_unittests") {
     ":test_support",
     "//base",
     "//base/test:test_support",
+    "//build:chromeos_buildflags",
     "//cc",
     "//cc:test_support",
     "//components/viz/common",

ui/compositor/test/animation_throughput_reporter_test_base.cc

@@ -8,6 +8,7 @@
 
 #include "base/run_loop.h"
 #include "base/test/task_environment.h"
+#include "build/chromeos_buildflags.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/compositor/test/test_context_factories.h"
 #include "ui/gfx/geometry/rect.h"

ui/compositor/test/animation_throughput_reporter_test_base.h

@@ -9,6 +9,7 @@
 
 #include "base/test/task_environment.h"
 #include "base/timer/timer.h"
+#include "build/chromeos_buildflags.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/layer.h"

ui/compositor/total_animation_throughput_reporter_unittest.cc

@@ -10,6 +10,7 @@
 #include "base/test/bind.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "cc/metrics/frame_sequence_metrics.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animation_sequence.h"

ui/gl/features.gni

@@ -4,6 +4,7 @@
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/chromeos/ui_mode.gni")
+import("//build/config/chromeos/ui_mode.gni")
 
 declare_args() {
   # Should ANGLE be linked statically?
@@ -17,7 +18,8 @@ declare_args() {
 
   # Should Dawn support be compiled to back the WebGPU implementation?
   # Also controls linking Dawn depedencies in such as SPIRV-Tools/SPIRV-Cross.
-  use_dawn = is_mac || is_win || is_chromeos || (is_linux && !is_chromecast)
+  use_dawn = is_mac || is_win || is_chromeos_ash ||
+             ((is_linux || is_chromeos_lacros) && !is_chromecast)
 
   # Should Dawn test binaries (unittests, end2end_tests, perf_tests) be built?
   # Independent of use_dawn, which controls whether Dawn is used in Chromium.

ui/views/BUILD.gn

@@ -733,7 +733,7 @@ component("views") {
         "corewm/tooltip_win.cc",
       ]
     }
-    if (!is_chromeos) {
+    if (!is_chromeos_ash) {
       sources += [
         "accessibility/views_ax_tree_manager.cc",
         "accessibility/widget_ax_tree_id_map.cc",

ui/views/accessibility/view_accessibility.cc

@@ -10,6 +10,7 @@
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "build/chromeos_buildflags.h"
 #include "ui/accessibility/accessibility_features.h"
 #include "ui/accessibility/ax_enums.mojom.h"
 #include "ui/accessibility/ax_tree_manager_map.h"
@@ -62,7 +63,7 @@ ViewAccessibility::ViewAccessibility(View* view)
       focused_virtual_child_(nullptr),
       is_leaf_(false),
       is_ignored_(false) {
-#if defined(USE_AURA) && !defined(OS_CHROMEOS)
+#if defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS_ASH)
   if (features::IsAccessibilityTreeForViewsEnabled()) {
     Widget* widget = view_->GetWidget();
     if (widget && widget->is_top_level() &&
@@ -158,7 +159,7 @@ bool ViewAccessibility::IsLeaf() const {
 
 ViewsAXTreeManager* ViewAccessibility::AXTreeManager() const {
   ViewsAXTreeManager* manager = nullptr;
-#if defined(USE_AURA) && !defined(OS_CHROMEOS)
+#if defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS_ASH)
   Widget* widget = view_->GetWidget();
 
   // Don't return managers for closing Widgets.

ui/views/accessibility/view_accessibility.h

@@ -12,6 +12,7 @@
 #include "base/callback_forward.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "ui/accessibility/ax_enums.mojom-forward.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/accessibility/platform/ax_unique_id.h"
@@ -222,7 +223,7 @@ class VIEWS_EXPORT ViewAccessibility {
   Widget* next_focus_ = nullptr;
   Widget* previous_focus_ = nullptr;
 
-#if defined(USE_AURA) && !defined(OS_CHROMEOS)
+#if defined(USE_AURA) && !BUILDFLAG(IS_CHROMEOS_ASH)
   // Each instance of ViewAccessibility that's associated with a root View
   // owns an ViewsAXTreeManager. For other Views, this should be nullptr.
   std::unique_ptr<views::ViewsAXTreeManager> ax_tree_manager_;

ui/webui/resources/cr_components/BUILD.gn

@@ -24,7 +24,7 @@ generate_grd("build_grdp") {
     "customize_themes/colorize.svg",
     "customize_themes/brush.svg",
   ]
-  if (is_chromeos) {
+  if (is_chromeos_ash) {
     input_files += [
       "chromeos/multidevice_setup/start_setup_icon_1x.png",
       "chromeos/multidevice_setup/start_setup_icon_2x.png",

ui/webui/resources/images/BUILD.gn

@@ -2,6 +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/chromeos/ui_mode.gni")
 import("//ui/webui/resources/tools/generate_grd.gni")
 
 generate_grd("build_grdp") {
@@ -61,7 +62,7 @@ generate_grd("build_grdp") {
     ]
   }
 
-  if (is_chromeos) {
+  if (is_chromeos_ash) {
     input_files += [
       # Similar to error.svg except that it is white-filled instead of
       # transparent-filled. Useful for badging images where the background may