Create separate WebRtc Platform.

PiperOrigin-RevId: 919283950

internal/platform/implementation/BUILD

@@ -90,6 +90,7 @@ cc_library(
 cc_library(
     name = "webrtc_platform",
     hdrs = [
+        "webrtc.h",
         "webrtc_platform.h",
     ],
     compatible_with = ["//buildenv/target:non_prod"],
@@ -97,7 +98,6 @@ cc_library(
         "//:__subpackages__",
     ],
     deps = [
-        ":comm",
         "//connections/implementation/proto:offline_wire_formats_cc_proto",
         "//internal/platform:base",
         # "//third_party/webrtc/files/stable/webrtc/api:libjingle_peerconnection_api",
@@ -120,7 +120,6 @@ cc_library(
         "http_loader.h",
         "psk_info.h",
         "upgrade_address_info.h",
-        "webrtc.h",
         "wifi.h",
         "wifi_direct.h",
         "wifi_hotspot.h",
@@ -136,15 +135,12 @@ cc_library(
         "//third_party/nearby/presence/implementation:__subpackages__",
     ],
     deps = [
-        "//connections/implementation/proto:offline_wire_formats_cc_proto",
         "//internal/platform:base",
         "//internal/platform:cancellation_flag",
         "//internal/platform:mac_address",
         "//internal/platform:uuid",
         "//internal/proto:credential_cc_proto",
         "//internal/proto:local_credential_cc_proto",
-        # "//third_party/webrtc/files/stable/webrtc/api:create_peerconnection_factory",  # buildcleaner: keep
-        # "//third_party/webrtc/files/stable/webrtc/api:peer_connection_interface",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/container:flat_hash_map",
         "@com_google_absl//absl/functional:any_invocable",

internal/platform/implementation/apple/BUILD

@@ -54,11 +54,24 @@ objc_library(
 objc_library(
     name = "apple_webrtc",
     srcs = [
+        "webrtc.mm",
         "webrtc_platform.mm",
     ],
+    hdrs = [
+        "webrtc.h",
+    ],
     deps = [
-        ":apple",
+        "@com_google_absl//absl/status",
+        "@com_google_absl//absl/strings",
+        "//third_party/apple_frameworks:Foundation",
+        "//internal/platform:logging",
+        "//internal/platform:tachyon_express_signaling_messenger",
+        "//internal/platform:types",
         "//internal/platform/implementation:webrtc_platform",
+        "//internal/proto:tachyon_cc_proto",
+        # "//third_party/webrtc/files/stable/webrtc/api:create_modular_peer_connection_factory",
+        # "//third_party/webrtc/files/stable/webrtc/api:peer_connection_interface",
+        "//third_party/webrtc/files/stable/webrtc/api/task_queue:default_task_queue_factory",
     ],
 )
 
@@ -72,7 +85,6 @@ objc_library(
         "preferences_manager.mm",
         "scheduled_executor.mm",
         "timer.mm",
-        "webrtc.mm",
         "wifi_hotspot.mm",
         "wifi_lan.mm",
     ],
@@ -81,7 +93,6 @@ objc_library(
         "device_info.h",
         "preferences_manager.h",
         "timer.h",
-        "webrtc.h",
         "wifi.h",
         "wifi_hotspot.h",
         "wifi_lan.h",
@@ -122,10 +133,6 @@ objc_library(
         "//internal/platform:tachyon_express_signaling_messenger",
         "//internal/platform:types",
         "//internal/proto:tachyon_cc_proto",
-        "//third_party/webrtc/files/stable/webrtc/api/task_queue:default_task_queue_factory",
-        # "//third_party/webrtc/files/stable/webrtc/api:create_modular_peer_connection_factory",
-        # "//third_party/webrtc/files/stable/webrtc/api:peer_connection_interface",
-        "//third_party/webrtc/files/stable/webrtc/rtc_base:checks",
         "//internal/platform:base",
         "//internal/platform/implementation:comm",
         "//internal/platform/implementation:platform",

internal/platform/implementation/g3/BUILD

@@ -112,6 +112,7 @@ cc_library(
         "//internal/platform:types",
         "//internal/platform:uuid",
         "//internal/platform/implementation:comm",
+        "//internal/platform/implementation:webrtc_platform",
         "//internal/platform/implementation:wifi_utils",
         "//internal/proto:credential_cc_proto",
         # "//third_party/webrtc/files/stable/webrtc/api:create_modular_peer_connection_factory",
@@ -177,6 +178,7 @@ cc_library(
     testonly = True,
     srcs = [
         "platform.cc",
+        "webrtc_platform.cc",
     ],
     defines = ["NO_WEBRTC"],
     visibility = [
@@ -208,14 +210,16 @@ cc_library(
         "//internal/platform/implementation:comm",
         "//internal/platform/implementation:platform",
         "//internal/platform/implementation:types",
+        "//internal/platform/implementation:webrtc_platform",
         "//internal/platform/implementation/shared:count_down_latch",
         "//internal/platform/implementation/shared:file",
+        "//third_party/gloop/thread",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/status",
         "@com_google_absl//absl/status:statusor",
         "@com_google_absl//absl/strings",
-        "@com_google_nisaba//nisaba/port:thread_pool",
     ],
+    alwayslink = 1,
 )
 
 cc_library(

internal/platform/implementation/g3/platform.cc

@@ -14,7 +14,6 @@
 
 #include "internal/platform/implementation/platform.h"
 
-#include <cstddef>
 #include <cstdint>
 #include <functional>
 #include <memory>
@@ -25,6 +24,7 @@
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
+#include "third_party/gloop/thread/thread.h"
 #include "internal/base/file_path.h"
 #include "internal/base/files.h"
 #include "internal/platform/implementation/app_lifecycle_monitor.h"
@@ -55,11 +55,6 @@
 #include "internal/platform/logging.h"
 #include "internal/platform/os_name.h"
 #include "internal/platform/payload_id.h"
-#include "thread/thread.h"
-#ifndef NO_WEBRTC
-#include "internal/platform/implementation/g3/webrtc.h"
-#include "internal/platform/implementation/webrtc.h"
-#endif
 #include "internal/platform/implementation/g3/atomic_boolean.h"
 #include "internal/platform/implementation/g3/atomic_reference.h"
 #include "internal/platform/implementation/g3/ble.h"
@@ -80,7 +75,6 @@
 #include "internal/platform/implementation/g3/wifi_lan.h"
 #include "internal/platform/implementation/shared/file.h"
 #include "internal/platform/implementation/wifi.h"
-#include "internal/platform/medium_environment.h"
 
 namespace nearby {
 namespace api {
@@ -219,16 +213,6 @@ ImplementationPlatform::CreateWifiDirectMedium() {
   return std::make_unique<g3::WifiDirectMedium>();
 }
 
-#ifndef NO_WEBRTC
-std::unique_ptr<WebRtcMedium> ImplementationPlatform::CreateWebRtcMedium() {
-  if (MediumEnvironment::Instance().GetEnvironmentConfig().webrtc_enabled) {
-    return std::make_unique<g3::WebRtcMedium>();
-  } else {
-    return nullptr;
-  }
-}
-#endif
-
 std::unique_ptr<AppLifecycleMonitor>
 ImplementationPlatform::CreateAppLifecycleMonitor(
     std::function<void(AppLifecycleMonitor::AppLifecycleState)>

internal/platform/implementation/g3/webrtc_platform.cc

@@ -0,0 +1,34 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "internal/platform/implementation/webrtc_platform.h"
+
+#include <memory>
+
+#include "internal/platform/implementation/g3/webrtc.h"
+#include "internal/platform/implementation/webrtc.h"
+#include "internal/platform/medium_environment.h"
+
+namespace nearby::api {
+
+std::unique_ptr<WebRtcMedium>
+WebRtcImplementationPlatform::CreateWebRtcMedium() {
+  if (MediumEnvironment::Instance().GetEnvironmentConfig().webrtc_enabled) {
+    return std::make_unique<g3::WebRtcMedium>();
+  } else {
+    return nullptr;
+  }
+}
+
+}  // namespace nearby::api

internal/platform/implementation/platform.h

@@ -43,9 +43,6 @@
 #include "internal/platform/implementation/scheduled_executor.h"
 #include "internal/platform/implementation/submittable_executor.h"
 #include "internal/platform/implementation/timer.h"
-#ifndef NO_WEBRTC
-#include "internal/platform/implementation/webrtc.h"
-#endif
 #include "internal/platform/implementation/wifi.h"
 #include "internal/platform/implementation/wifi_direct.h"
 #include "internal/platform/implementation/wifi_hotspot.h"
@@ -134,9 +131,6 @@ class ImplementationPlatform {
   static std::unique_ptr<WifiHotspotMedium> CreateWifiHotspotMedium();
   static std::unique_ptr<WifiDirectMedium> CreateWifiDirectMedium();
   static std::unique_ptr<Timer> CreateTimer();
-#ifndef NO_WEBRTC
-  static std::unique_ptr<WebRtcMedium> CreateWebRtcMedium();
-#endif
 
 #if defined(NEARBY_CHROMIUM)
   static std::unique_ptr<AppLifecycleMonitor> CreateAppLifecycleMonitor(

internal/platform/implementation/webrtc.h

@@ -15,8 +15,6 @@
 #ifndef PLATFORM_API_WEBRTC_H_
 #define PLATFORM_API_WEBRTC_H_
 
-#ifndef NO_WEBRTC
-
 #include <memory>
 #include <optional>
 #include <string>
@@ -26,6 +24,7 @@
 #include "connections/implementation/proto/offline_wire_formats.pb.h"
 #include "internal/platform/byte_array.h"
 #include "webrtc/api/peer_connection_interface.h"
+#include "webrtc/api/scoped_refptr.h"
 
 namespace nearby {
 namespace api {
@@ -78,6 +77,4 @@ class WebRtcMedium {
 }  // namespace api
 }  // namespace nearby
 
-#endif
-
 #endif  // PLATFORM_API_WEBRTC_H_

internal/platform/implementation/windows/BUILD

@@ -321,6 +321,9 @@ cc_library(
         "-DNO_INTEL_PIE",
         "-D_WIN32_WINNT=_WIN32_WINNT_WIN10 -DWINVER=_WIN32_WINNT_WIN10",
     ],
+    linkopts = [
+        "iphlpapi.lib",
+    ],
     tags = ["windows"],
     visibility = [
         "//chrome/chromeos/assistant/data_migration/lib:__pkg__",

internal/platform/implementation/windows/platform.cc

@@ -259,10 +259,6 @@ ImplementationPlatform::CreateWifiDirectMedium() {
   return std::make_unique<windows::WifiDirectMedium>();
 }
 
-std::unique_ptr<WebRtcMedium> ImplementationPlatform::CreateWebRtcMedium() {
-  return nullptr;
-}
-
 std::unique_ptr<AppLifecycleMonitor>
 ImplementationPlatform::CreateAppLifecycleMonitor(
     std::function<void(AppLifecycleMonitor::AppLifecycleState)>