Applied platform thread to network lib

PiperOrigin-RevId: 520998502

fastpair/internal/test/BUILD

@@ -14,6 +14,8 @@ cc_library(
     deps = [
         "//internal/network:types",
         "@com_google_absl//absl/functional:any_invocable",
+        "@com_google_absl//absl/status",
+        "@com_google_absl//absl/status:statusor",
     ],
 )
 
@@ -30,6 +32,7 @@ cc_test(
     deps = [
         ":nearby_fastpair_test",
         "//internal/network:types",
+        "//internal/platform/implementation/g3",
         "@com_github_protobuf_matchers//protobuf-matchers",
         "@com_google_absl//absl/container:flat_hash_map",
         "@com_google_absl//absl/functional:any_invocable",

fastpair/internal/test/fast_pair_fake_http_client.h

@@ -21,6 +21,7 @@
 #include <utility>
 #include <vector>
 
+#include "absl/status/statusor.h"
 #include "internal/network/http_client.h"
 
 namespace nearby {
@@ -51,6 +52,11 @@ class FastPairFakeHttpClient : public HttpClient {
     request_infos_.push_back(std::move(request_info));
   }
 
+  absl::StatusOr<HttpResponse> GetResponse(
+      const HttpRequest& request) override {
+    return absl::UnimplementedError("unimplemented");
+  }
+
   // Mock methods
   void CompleteRequest(const absl::StatusOr<HttpResponse>& response,
                        size_t pos = 0) {