lacros: Migrate chromeos/chromeos_buildflags.h to build/chromeos_buildflags.h

This CL unifies those two buildflags file for Chrome OS.

BUG=1114198
TEST=Build locally. Ran tryjob.

Change-Id: Id7343da06ac6b17cb20cb20babdd8ab06ac40028
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2377525
Commit-Queue: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804308}

build/BUILD.gn

@@ -5,6 +5,7 @@
 import("//build/buildflag_header.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
+import("//build/config/chromeos/args.gni")
 import("//build/config/chromeos/ui_mode.gni")
 
 source_set("buildflag_header_h") {
@@ -36,5 +37,8 @@ buildflag_header("chromecast_buildflags") {
 buildflag_header("chromeos_buildflags") {
   header = "chromeos_buildflags.h"
 
-  flags = [ "IS_LACROS=$chromeos_is_browser_only" ]
+  flags = [
+    "IS_CHROMEOS_DEVICE=$is_chromeos_device",
+    "IS_LACROS=$chromeos_is_browser_only",
+  ]
 }

chromeos/BUILD.gn

@@ -164,6 +164,7 @@ test("chromeos_unittests") {
     ":chromeos_buildflags",
     ":test_support",
     "//base/test:test_support",
+    "//build:chromeos_buildflags",
     "//chromeos/attestation:unit_tests",
     "//chromeos/audio:unit_tests",
     "//chromeos/cryptohome:unit_tests",

chromeos/components/BUILD.gn

@@ -14,7 +14,7 @@ test("chromeos_components_unittests") {
   deps = [
     "//base",
     "//base/test:test_support",
-    "//chromeos:chromeos_buildflags",
+    "//build:chromeos_buildflags",
     "//chromeos/components/account_manager:unit_tests",
     "//chromeos/components/bloom:unit_tests",
     "//chromeos/components/cdm_factory_daemon:unit_tests",

chromeos/components/run_all_unittests.cc

@@ -5,7 +5,7 @@
 #include "base/bind.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
-#include "chromeos/chromeos_buildflags.h"
+#include "build/chromeos_buildflags.h"
 #include "mojo/core/embedder/embedder.h"
 
 #if BUILDFLAG(IS_CHROMEOS_DEVICE)

chromeos/memory/BUILD.gn

@@ -51,7 +51,7 @@ source_set("unit_tests") {
     ":memory",
     "//base/test:test_support",
     "//base/util/memory_pressure",
-    "//chromeos:chromeos_buildflags",
+    "//build:chromeos_buildflags",
     "//mojo/core/embedder",
     "//services/resource_coordinator/public/cpp/memory_instrumentation",
     "//testing/gmock",

chromeos/memory/userspace_swap/BUILD.gn

@@ -60,7 +60,7 @@ source_set("unit_tests") {
     ":mojom",
     ":userspace_swap",
     "//base/test:test_support",
-    "//chromeos:chromeos_buildflags",
+    "//build:chromeos_buildflags",
     "//mojo/core/embedder",
     "//services/resource_coordinator/public/cpp/memory_instrumentation",
     "//testing/gmock",

chromeos/test/run_all_unittests.cc

@@ -5,7 +5,7 @@
 #include "base/bind.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
-#include "chromeos/chromeos_buildflags.h"
+#include "build/chromeos_buildflags.h"
 #include "mojo/core/embedder/embedder.h"
 
 #if BUILDFLAG(IS_CHROMEOS_DEVICE)

ui/chromeos/BUILD.gn

@@ -41,7 +41,7 @@ test("ui_chromeos_unittests") {
   deps = [
     ":chromeos",
     "//base/test:test_support",
-    "//chromeos:chromeos_buildflags",
+    "//build:chromeos_buildflags",
     "//mojo/core/embedder",
     "//skia",
     "//testing/gtest",

ui/chromeos/run_all_unittests.cc

@@ -10,7 +10,7 @@
 #include "base/path_service.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
-#include "chromeos/chromeos_buildflags.h"
+#include "build/chromeos_buildflags.h"
 #include "mojo/core/embedder/embedder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/env.h"