Change "ios" package name to "apple" since its usage isn't limited to iOS

PiperOrigin-RevId: 497046967

internal/platform/implementation/apple/multi_thread_executor.mm

@@ -0,0 +1,40 @@
+// Copyright 2020 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.
+
+#import "internal/platform/implementation/apple/multi_thread_executor.h"
+
+#import "internal/platform/implementation/apple/scheduled_executor.h"
+#include "internal/platform/runnable.h"
+
+namespace location {
+namespace nearby {
+namespace apple {
+
+MultiThreadExecutor::MultiThreadExecutor(int max_concurrency) {
+  scheduled_executor_ = std::make_unique<ScheduledExecutor>(max_concurrency);
+}
+
+void MultiThreadExecutor::Shutdown() { scheduled_executor_->Shutdown(); }
+
+void MultiThreadExecutor::Execute(Runnable&& runnable) {
+  scheduled_executor_->Execute(std::move(runnable));
+}
+
+bool MultiThreadExecutor::DoSubmit(Runnable&& runnable) {
+  return scheduled_executor_->DoSubmit(std::move(runnable));
+}
+
+}  // namespace apple
+}  // namespace nearby
+}  // namespace location