Deprecate MASQUE PerRequestConfig::SetExpectedEncapsulatedResponseBody()

This method's behavior can still be simulated with SetEncapsulatedResponseBodyCallback().

PiperOrigin-RevId: 899001346

quiche/quic/masque/masque_ohttp_client.cc

diff --git a/quiche/quic/masque/masque_ohttp_client.cc b/quiche/quic/masque/masque_ohttp_client.cc
index 4aef071..e409be7 100644
--- a/quiche/quic/masque/masque_ohttp_client.cc
+++ b/quiche/quic/masque/masque_ohttp_client.cc
@@ -658,17 +658,6 @@
     return absl::InvalidArgumentError(absl::StrCat(
         "Bad encapsulated status code: ", encapsulated_status_code));
   }
-  if (it->second.per_request_config.expected_encapsulated_response_body()
-          .has_value() &&
-      encapsulated_response->body !=
-          *it->second.per_request_config
-               .expected_encapsulated_response_body()) {
-    return absl::InvalidArgumentError(absl::StrCat(
-        "Unexpected encapsulated response body: \"",
-        encapsulated_response->body, "\" != \"",
-        *it->second.per_request_config.expected_encapsulated_response_body(),
-        "\""));
-  }
   if (const auto& callback =
           it->second.per_request_config.encapsulated_response_body_callback();
       callback) {

quiche/quic/masque/masque_ohttp_client.h

diff --git a/quiche/quic/masque/masque_ohttp_client.h b/quiche/quic/masque/masque_ohttp_client.h
index d0fa6eb..0d7ce97 100644
--- a/quiche/quic/masque/masque_ohttp_client.h
+++ b/quiche/quic/masque/masque_ohttp_client.h
@@ -64,11 +64,6 @@
       void SetExpectedEncapsulatedStatusCode(uint16_t status_code) {
         expected_encapsulated_status_code_ = status_code;
       }
-      void SetExpectedEncapsulatedResponseBody(
-          const std::string& expected_encapsulated_response_body) {
-        expected_encapsulated_response_body_ =
-            expected_encapsulated_response_body;
-      }
       void SetEncapsulatedResponseBodyCallback(
           std::function<absl::Status(absl::string_view)> callback) {
         encapsulated_response_body_callback_ = std::move(callback);
@@ -95,9 +90,6 @@
       std::optional<uint16_t> expected_encapsulated_status_code() const {
         return expected_encapsulated_status_code_;
       }
-      std::optional<std::string> expected_encapsulated_response_body() const {
-        return expected_encapsulated_response_body_;
-      }
       const std::function<absl::Status(absl::string_view)> absl_nullable&
       encapsulated_response_body_callback() const {
         return encapsulated_response_body_callback_;
@@ -114,7 +106,6 @@
       std::optional<std::string> expected_gateway_error_;
       std::optional<uint16_t> expected_gateway_status_code_;
       std::optional<uint16_t> expected_encapsulated_status_code_;
-      std::optional<std::string> expected_encapsulated_response_body_;
       std::function<absl::Status(absl::string_view)> absl_nullable
       encapsulated_response_body_callback_ = nullptr;
     };