Lacros: Preparation for lacros target_os switch.

This is a mechanical change replacing defined(OS_CHROMEOS) with
BUILDFLAG(IS_CHROMEOS_ASH) and adding BUILDFLAG(IS_CHROMEOS_LACROS) to
defined(OS_LINUX) to ensure switching lacros' target_os from linux to
chromeos does not affect the lacros binary.

It also renames chromeos_is_browser_only with is_chromeos_lacros which
was a gn var introduced to be used in place of chromeos_is_browser_only.

More detail on http://go/lacros-macros.

Bug: 1052397
Change-Id: Ic26b3db620b45e27e4f28e35a4015e08f4f2c6fa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2631389Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Yuta Hijikata <ythjkt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844437}

third_party/blink/common/features.cc

@@ -813,7 +813,7 @@ const base::Feature kWebAppEnableProtocolHandlers{
 // without conversion to I420.
 const base::Feature kWebRtcLibvpxEncodeNV12 {
   "WebRtcLibvpxEncodeNV12",
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_CHROMEOS_ASH)
       base::FEATURE_DISABLED_BY_DEFAULT
 #else
       base::FEATURE_ENABLED_BY_DEFAULT

third_party/blink/renderer/core/exported/BUILD.gn

@@ -83,6 +83,7 @@ blink_core_sources("exported") {
   }
 
   deps = [
+    "//build:chromeos_buildflags",
     "//third_party/blink/renderer/core:core_generated",
     "//third_party/blink/renderer/core/probe",
     "//third_party/blink/renderer/core/typed_arrays:typed_arrays",

third_party/blink/renderer/core/exported/web_view_impl.cc

@@ -189,6 +189,8 @@
 #undef pow
 #include <cmath>  // for std::pow
 
+#include "build/chromeos_buildflags.h"
+
 // The following constants control parameters for automated scaling of webpages
 // (such as due to a double tap gesture or find in page etc.). These are
 // experimentally determined.
@@ -410,7 +412,9 @@ ui::mojom::blink::WindowOpenDisposition NavigationPolicyToDisposition(
 #if !defined(OS_MAC) && !defined(OS_WIN)
 SkFontHinting RendererPreferencesToSkiaHinting(
     const blink::RendererPreferences& prefs) {
-#if defined(OS_LINUX)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
   if (!prefs.should_antialias_text) {
     // When anti-aliasing is off, GTK maps all non-zero hinting settings to
     // 'Normal' hinting so we do the same. Otherwise, folks who have 'Slight'
@@ -3067,12 +3071,15 @@ void WebViewImpl::UpdateFontRenderingFromRendererPrefs() {
       gfx::FontRenderParams::SUBPIXEL_RENDERING_NONE);
   WebFontRenderStyle::SetSubpixelPositioning(
       renderer_preferences_.use_subpixel_positioning);
-#if defined(OS_LINUX) && !defined(OS_ANDROID)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if (defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)) && !defined(OS_ANDROID)
   if (!renderer_preferences_.system_font_family_name.empty()) {
     WebFontRenderStyle::SetSystemFontFamily(blink::WebString::FromUTF8(
         renderer_preferences_.system_font_family_name));
   }
-#endif  // defined(OS_LINUX) && !defined(OS_ANDROID)
+#endif  // (defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)) &&
+        // !defined(OS_ANDROID)
 #endif  // defined(OS_WIN)
 #endif  // !defined(OS_MAC)
 }

third_party/blink/renderer/core/scroll/scrollbar_theme_aura.cc

@@ -31,6 +31,7 @@
 #include "third_party/blink/renderer/core/scroll/scrollbar_theme_aura.h"
 
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "cc/input/scrollbar.h"
 #include "third_party/blink/public/common/input/web_mouse_event.h"
 #include "third_party/blink/public/platform/platform.h"
@@ -137,7 +138,9 @@ bool ScrollbarThemeAura::SupportsDragSnapBack() const {
 // Disable snapback on desktop Linux to better integrate with the desktop
 // behavior. Typically, Linux apps do not implement scrollbar snapback (this
 // is true for at least GTK and QT apps).
-#if defined(OS_LINUX)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
   return false;
 #else
   return true;
@@ -303,7 +306,9 @@ ScrollbarPart ScrollbarThemeAura::PartsToInvalidateOnThumbPositionChange(
 
 bool ScrollbarThemeAura::ShouldCenterOnThumb(const Scrollbar& scrollbar,
                                              const WebMouseEvent& event) {
-#if defined(OS_LINUX)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
   if (event.button == WebPointerProperties::Button::kMiddle)
     return true;
 #endif

third_party/blink/renderer/modules/webgl/BUILD.gn

@@ -166,7 +166,10 @@ blink_modules_sources("webgl") {
   configs += [ "//third_party/blink/renderer/core:blink_core_pch" ]
 
   public_deps = [ "//device/vr/public/mojom:vr_service_blink" ]
-  deps = [ "//third_party/blink/renderer/modules/xr:xr" ]
+  deps = [
+    "//build:chromeos_buildflags",
+    "//third_party/blink/renderer/modules/xr:xr"
+  ]
   deps += [ "//third_party/blink/renderer/modules/webcodecs:webcodecs" ]
   allow_circular_includes_from = deps
 }

third_party/blink/renderer/modules/webgl/webgl_webcodecs_video_frame.cc

@@ -5,6 +5,7 @@
 #include "third_party/blink/renderer/modules/webgl/webgl_webcodecs_video_frame.h"
 
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "media/base/wait_and_replace_sync_token_client.h"
 #include "media/video/gpu_memory_buffer_video_frame_pool.h"
 #include "third_party/blink/renderer/bindings/modules/v8/v8_video_color_space.h"
@@ -26,7 +27,7 @@ namespace {
 const char kRequiredExtension[] = "GL_NV_EGL_stream_consumer_external";
 #elif defined(OS_MAC)
 const char kRequiredExtension[] = "GL_ANGLE_texture_rectangle";
-#elif defined(OS_ANDROID) || defined(OS_CHROMEOS)
+#elif defined(OS_ANDROID) || BUILDFLAG(IS_CHROMEOS_ASH)
 const char kRequiredExtension[] = "GL_OES_EGL_image_external";
 #else
 const char kRequiredExtension[] = "";
@@ -216,7 +217,7 @@ WebGLWebCodecsVideoFrame::WebGLWebCodecsVideoFrame(
   auto& components_nv12 = format_to_components_map_[media::PIXEL_FORMAT_NV12];
   components_nv12[media::VideoFrame::kYPlane] = "r";
   components_nv12[media::VideoFrame::kUPlane] = "rg";
-#elif defined(OS_CHROMEOS)
+#elif BUILDFLAG(IS_CHROMEOS_ASH)
   formats_supported[media::PIXEL_FORMAT_ABGR] = true;
   auto& components_abgr = format_to_components_map_[media::PIXEL_FORMAT_ABGR];
   components_abgr[media::VideoFrame::kYPlane] = "rgb";
@@ -235,7 +236,9 @@ WebGLExtensionName WebGLWebCodecsVideoFrame::GetName() const {
 }
 
 bool WebGLWebCodecsVideoFrame::Supported(WebGLRenderingContextBase* context) {
-#if defined(OS_LINUX) || defined(OS_FUCHSIA)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS) || defined(OS_FUCHSIA)
   // TODO(jie.a.chen@intel.com): Add Linux support.
   return false;
 #else
@@ -270,7 +273,7 @@ WebGLWebCodecsVideoFrameHandle* WebGLWebCodecsVideoFrame::importVideoFrame(
   sampler_type = "sampler2DRect";
   sampler_func = "texture2DRect";
   pixel_format = media::PIXEL_FORMAT_XRGB;
-#elif defined(OS_ANDROID) || defined(OS_CHROMEOS)
+#elif defined(OS_ANDROID) || BUILDFLAG(IS_CHROMEOS_ASH)
   sampler_type = "samplerExternalOES";
   pixel_format = media::PIXEL_FORMAT_ABGR;
   src_color_space = gfx::ColorSpace::CreateSRGB();

third_party/blink/renderer/platform/wtf/BUILD.gn

@@ -213,6 +213,7 @@ component("wtf") {
 
   deps = [
     ":buildflags",
+    "//build:chromeos_buildflags",
 
     # TODO(tkent): WTF should not depend on it.
     "//third_party/blink/public/common:headers",

third_party/blink/renderer/platform/wtf/container_annotations.h

@@ -6,6 +6,7 @@
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_CONTAINER_ANNOTATIONS_H_
 
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "third_party/blink/renderer/platform/wtf/sanitizers.h"
 
 // TODO(ochang): Remove the ARCH_CPU_X86_64 condition to enable this for X86
@@ -36,13 +37,15 @@
   ANNOTATE_NEW_BUFFER(buffer, newCapacity, bufferSize);
 // Annotations require buffers to begin on an 8-byte boundary.
 
-#else  // ADDRESS_SANITIZER && (OS_LINUX || OS_CHROMEOS) && ARCH_CPU_X86_64
+#else  // ADDRESS_SANITIZER && (OS_LINUX || IS_CHROMEOS_ASH) &&
+       // ARCH_CPU_X86_64
 
 #define ANNOTATE_NEW_BUFFER(buffer, capacity, newSize)
 #define ANNOTATE_DELETE_BUFFER(buffer, capacity, oldSize)
 #define ANNOTATE_CHANGE_SIZE(buffer, capacity, oldSize, newSize)
 #define ANNOTATE_CHANGE_CAPACITY(buffer, oldCapacity, bufferSize, newCapacity)
 
-#endif  // ADDRESS_SANITIZER && (OS_LINUX || OS_CHROMEOS) && ARCH_CPU_X86_64
+#endif  // ADDRESS_SANITIZER && (OS_LINUX || IS_CHROMEOS_ASH) &&
+        // ARCH_CPU_X86_64
 
 #endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_CONTAINER_ANNOTATIONS_H_

third_party/crashpad/crashpad/util/BUILD.gn

@@ -379,7 +379,7 @@ crashpad_static_library("util") {
     ]
   }
 
-  deps = []
+  deps = [ "//build:chromeos_buildflags" ]
 
   if (crashpad_is_linux || crashpad_is_fuchsia || crashpad_is_android) {
     sources += [ "net/http_transport_socket.cc" ]

third_party/crashpad/crashpad/util/posix/scoped_mmap.cc

@@ -24,14 +24,19 @@
 #include "base/numerics/safe_math.h"
 #include "base/process/process_metrics.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 
-#if defined(OS_LINUX)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
 #include "third_party/lss/lss.h"
 #endif
 
 namespace {
 
-#if defined(OS_LINUX)
+// TODO(crbug.com/1052397): Revisit once build flag switch of lacros-chrome is
+// complete.
+#if defined(OS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
 void* CallMmap(void* addr,
                size_t len,
                int prot,

third_party/minigbm/BUILD.gn

@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/config/chromecast_build.gni")
+import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/linux/pkg_config.gni")
 
 assert(is_linux || is_chromeos)
@@ -11,7 +12,7 @@ declare_args() {
   # Controls whether the build should use the version of minigbm library shipped
   # with the system. In release builds of desktop Linux and Chrome OS we use the
   # system version.
-  use_system_minigbm = is_linux && !is_chromecast
+  use_system_minigbm = (is_linux || is_chromeos_lacros) && !is_chromecast
 
   use_amdgpu_minigbm = false
   use_exynos_minigbm = false

third_party/polymer/v1_0/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") {
@@ -76,7 +77,7 @@ generate_grd("build_grdp") {
     "polymer2/polymer.html",
   ]
 
-  if (is_chromeos) {
+  if (is_chromeos_ash) {
     input_files += [
       "html-imports/html-imports.min.js",
       "iron-dropdown/iron-dropdown-extracted.js",

third_party/polymer/v3_0/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") {
@@ -49,7 +50,7 @@ generate_grd("build_grdp") {
     "polymer/polymer_bundled.min.js",
   ]
 
-  if (is_chromeos) {
+  if (is_chromeos_ash) {
     input_files += [
       "iron-dropdown/iron-dropdown.js",
       "iron-dropdown/iron-dropdown-scroll-manager.js",

third_party/tflite/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("//build/config/sanitizers/sanitizers.gni")
 
 config("tflite_config") {
@@ -33,7 +34,7 @@ config("tflite_flags") {
     defines += [ "TFLITE_WITH_RUY" ]
   }
 
-  if (is_linux) {
+  if (is_linux || is_chromeos_lacros) {
     defines += [ "GEMMLOWP_ALLOW_SLOW_SCALAR_FALLBACK" ]
   }
 }

third_party/widevine/cdm/BUILD.gn

@@ -5,6 +5,7 @@
 import("//build/buildflag_header.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/chromeos/ui_mode.gni")
+import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/features.gni")
 import("//media/cdm/library_cdm/cdm_paths.gni")
 import("//media/media_options.gni")
@@ -35,7 +36,7 @@ if (bundle_widevine_cdm) {
     widevine_cdm_version_h_file =
         "chromeos/$widevine_arch/widevine_cdm_version.h"
     widevine_cdm_binary_files = [ "chromeos/$widevine_arch/libwidevinecdm.so" ]
-  } else if (is_linux) {
+  } else if (is_linux || is_chromeos_lacros) {
     widevine_cdm_version_h_file = "linux/$widevine_arch/widevine_cdm_version.h"
     widevine_cdm_binary_files = [ "linux/$widevine_arch/libwidevinecdm.so" ]
     widevine_cdm_manifest_and_license_files = [

third_party/widevine/cdm/widevine.gni

@@ -4,6 +4,7 @@
 
 import("//build/config/chrome_build.gni")
 import("//build/config/chromeos/ui_mode.gni")
+import("//build/config/chromeos/ui_mode.gni")
 import("//media/media_options.gni")
 
 declare_args() {
@@ -23,8 +24,9 @@ if (is_chromeos_ash && !is_chromeos_device) {
 # architectures. Notably on Android library CDM is not used and Widevine is
 # supported via Android MediaDrm API.
 library_widevine_cdm_available =
-    (is_chromeos && (target_cpu == "x64" || target_cpu == "arm")) ||
-    (is_linux && (target_cpu == "x86" || target_cpu == "x64")) ||
+    (is_chromeos_ash && (target_cpu == "x64" || target_cpu == "arm")) ||
+    ((is_linux || is_chromeos_lacros) &&
+     (target_cpu == "x86" || target_cpu == "x64")) ||
     (is_mac && (target_cpu == "x64" || target_cpu == "arm64")) ||
     (is_win && (target_cpu == "x86" || target_cpu == "x64"))
 
@@ -39,7 +41,8 @@ enable_library_widevine_cdm =
 # it's a component. See below.
 # Note: Not enabled on ChromeOS. See https://crbug.com/971433
 enable_widevine_cdm_component =
-    enable_library_widevine_cdm && (is_win || is_mac || is_linux)
+    enable_library_widevine_cdm &&
+    (is_win || is_mac || is_linux || is_chromeos_lacros)
 
 # Widevine CDM is bundled as part of Google Chrome builds.
 bundle_widevine_cdm = enable_library_widevine_cdm && is_chrome_branded