[Cast Convergence] Remove is_chromecast from //third_party

This CL updates the //third_party code to remove is_chromecast and
replace it with new `is_castos`, `is_cast_android` and
`enable_cast_receiver` flags as appropriate, which signify either "a
nest chromecast-hardware device", "an android cast receiving hardware
device", or "a platform which can act as a cast receiver" (such as ATV,
Fuchsia, etc) respectively.

Bug: 1219802
Change-Id: I5dc27cfc66893e26e8d3cf8f356a267620ad247e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3699108
Reviewed-by: Akihiro Ota <akihiroota@chromium.org>
Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Ryan Keane <rwkeane@google.com>
Reviewed-by: David Dorwin <ddorwin@chromium.org>
Reviewed-by: Ben Wagner <bungeman@chromium.org>
Reviewed-by: Mark Foltz <mfoltz@chromium.org>
Reviewed-by: James Zern <jzern@google.com>
Cr-Commit-Position: refs/heads/main@{#1014885}

third_party/blink/common/BUILD.gn

@@ -286,7 +286,7 @@ source_set("common") {
     deps += [ "//ui/gfx/" ]
   }
 
-  if (is_chromeos || is_android || is_win || is_chromecast || is_fuchsia) {
+  if (is_chromeos || is_android || is_win || is_castos || is_fuchsia) {
     defines = [ "ENABLE_PROTECTED_MEDIA_IDENTIFIER_PERMISSION" ]
   }
 }

third_party/blink/renderer/modules/mediastream/media_stream_audio_processor_test.cc

@@ -240,17 +240,19 @@ TEST_P(MediaStreamAudioProcessorTestMultichannel, MAYBE_TestAllSampleRates) {
       new rtc::RefCountedObject<WebRtcAudioDeviceImpl>());
   blink::AudioProcessingProperties properties;
 
+  // TODO(crbug.com/1334991): Clarify WebRTC audio processing support for 96 kHz
+  // input.
   static const int kSupportedSampleRates[] = {
     8000,
     16000,
     22050,
     32000,
     44100,
     48000
-#if BUILDFLAG(IS_CHROMECAST)
+#if BUILDFLAG(IS_CASTOS) || BUILDFLAG(IS_CAST_ANDROID)
     ,
     96000
-#endif  // BUILDFLAG(IS_CHROMECAST)
+#endif  // BUILDFLAG(IS_CASTOS) || BUILDFLAG(IS_CAST_ANDROID)
   };
   for (int sample_rate : kSupportedSampleRates) {
     SCOPED_TRACE(testing::Message() << "sample_rate=" << sample_rate);
@@ -266,12 +268,14 @@ TEST_P(MediaStreamAudioProcessorTestMultichannel, MAYBE_TestAllSampleRates) {
     EXPECT_TRUE(audio_processor->has_webrtc_audio_processing());
     VerifyDefaultComponents(*audio_processor);
 
+    // TODO(crbug.com/1336055): Investigate why chromecast devices need special
+    // logic here.
     int expected_sample_rate =
-#if BUILDFLAG(IS_CHROMECAST)
+#if BUILDFLAG(IS_CASTOS) || BUILDFLAG(IS_CAST_ANDROID)
         std::min(sample_rate, media::kAudioProcessingSampleRateHz);
 #else
         media::kAudioProcessingSampleRateHz;
-#endif  // BUILDFLAG(IS_CHROMECAST)
+#endif  // BUILDFLAG(IS_CASTOS) || BUILDFLAG(IS_CAST_ANDROID)
     const int expected_output_channels =
         use_multichannel_processing ? params_.channels() : 1;
     ProcessDataAndVerifyFormat(*audio_processor, mock_capture_callback_,

third_party/chromevox/BUILD.gn

@@ -4,7 +4,7 @@
 import("//build/config/chromeos/ui_mode.gni")
 import("//chromecast/chromecast.gni")
 
-assert(is_chromeos_ash || is_chromecast)
+assert(is_chromeos_ash || is_castos)
 
 chromevox_out_dir = "$root_out_dir/resources/chromeos/accessibility/chromevox"
 

third_party/expat/BUILD.gn

@@ -9,7 +9,7 @@ import("//testing/libfuzzer/fuzzer_test.gni")
 # let's not pull it in twice.
 # Chromecast doesn't ship expat as a system library.
 # Libfuzzer and AFL need to build library from sources.
-if ((is_linux || is_chromeos) && !is_chromecast && !use_fuzzing_engine) {
+if (((is_linux && !is_castos) || is_chromeos) && !use_fuzzing_engine) {
   config("expat_config") {
     libs = [ "expat" ]
   }

third_party/freetype-testing/BUILD.gn

@@ -128,7 +128,7 @@ source_set("freetype_fuzzer_sources") {
     "$_src/visitors/glyphvisitor.h",
   ]
 
-  if (is_linux || is_chromeos || is_chromecast) {
+  if (is_linux || is_chromeos || is_cast_android) {
     # These sources depend on FreeType's symbol FT_Get_BDF_Charset_ID which is only built on this
     # configuration/platforms, see FreeType's BUILD.gn. In turn they will only be needed by the BDF fuzzer that we built only on this configuration/platforms.
     sources += [
@@ -282,7 +282,7 @@ freetype_fuzzer_test("type1_render") {
   dict = "src/fuzzing/settings/oss-fuzz/type1.dict"
 }
 
-if (is_linux || is_chromeos || is_chromecast) {
+if (is_linux || is_chromeos || is_cast_android) {
   # FreeType's symbol FT_Get_BDF_Charset_ID is only built on this
   # configuration, see FreeType's BUILD.gn. So build fuzzers that depend on
   # this symbol only on this configuration, too.

third_party/freetype/BUILD.gn

@@ -132,7 +132,7 @@ source_set("freetype_source") {
     ]
   }
 
-  if (is_linux || is_chromeos || is_chromecast) {
+  if (is_linux || is_chromeos || is_cast_android) {
     # Needed for content_shell on Linux and Chromecast, since fontconfig
     # requires FT_Get_BDF_Property.
     sources += [ "src/src/base/ftbdf.c" ]

third_party/libaom/options.gni

@@ -4,7 +4,7 @@ import("//build/config/gclient_args.gni")
 
 declare_args() {
   # Enable encoding and decoding AV1 video files.
-  enable_libaom = !is_chromeos_lacros && !is_android && !is_chromecast
+  enable_libaom = !is_chromeos_lacros && !is_android && !is_castos
 
   # To be deprecated soon.
   enable_libaom_decoder = false

third_party/liblouis/BUILD.gn

@@ -9,7 +9,7 @@ liblouis_library("liblouis") {
   dest_dir = "$root_build_dir/resources/chromeos/accessibility/chromevox/background/braille"
 }
 
-if (!is_chromecast) {
+if (!is_castos) {
   chromevox_test_data_dir = "$root_build_dir/chromevox_test_data/braille"
 
   liblouis_library("liblouis_test_data") {

third_party/minigbm/BUILD.gn

@@ -12,7 +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) || is_chromeos_lacros
+  use_system_minigbm = (is_linux && !is_castos) || is_chromeos_lacros
 
   use_amdgpu_minigbm = false
   use_exynos_minigbm = false

third_party/wayland/features.gni

@@ -9,7 +9,7 @@ import("//build/config/sanitizers/sanitizers.gni")
 declare_args() {
   # Controls whether the build should use the version of Wayland
   # library shipped with the system or Chromium third_party.
-  use_system_libwayland = is_linux && !is_chromecast && !is_chromeos_lacros &&
+  use_system_libwayland = is_linux && !is_castos &&
                           default_toolchain != "//build/toolchain/cros:target"
 
   # Path to wayland-scanner. Has effect only when the system libwayland is used.

third_party/webrtc_overrides/BUILD.gn

@@ -117,7 +117,7 @@ webrtc_public_deps = [
 if (defined(rtc_exclude_system_time) && rtc_exclude_system_time) {
   webrtc_public_deps += [ ":system_time" ]
 }
-if (is_chromecast) {
+if (is_castos || is_cast_android) {
   webrtc_public_deps += [
     "//third_party/webrtc/api:network_state_predictor_api",
     "//third_party/webrtc/api/audio:audio_frame_api",
@@ -132,7 +132,7 @@ if (is_chromecast) {
     "//third_party/webrtc/modules/video_coding:codec_globals_headers",
   ]
 }
-if (is_chromecast || is_nacl) {
+if (is_castos || is_cast_android || is_nacl) {
   # For chromecast and NaCL, provide a default field trial implementation.
   webrtc_public_deps += [ "//third_party/webrtc/system_wrappers:field_trial" ]
 } else {