[chttp2] Disable overload_protection experiment (#34767)

This causes breakages in multiple tests. The event_engine_listener tests
are particularly sensitive to the breakage.

bazel/experiments.bzl

@@ -39,6 +39,7 @@ EXPERIMENTS = {
             ],
             "flow_control_test": [
                 "multiping",
+                "overload_protection",
                 "peer_state_based_framing",
                 "red_max_concurrent_streams",
                 "rstpit",
@@ -88,7 +89,6 @@ EXPERIMENTS = {
                 "chttp2_batch_requests",
                 "chttp2_offload_on_rst_stream",
                 "lazier_stream_updates",
-                "overload_protection",
                 "write_size_cap",
                 "write_size_policy",
             ],
@@ -129,6 +129,7 @@ EXPERIMENTS = {
             ],
             "flow_control_test": [
                 "multiping",
+                "overload_protection",
                 "peer_state_based_framing",
                 "red_max_concurrent_streams",
                 "rstpit",
@@ -172,7 +173,6 @@ EXPERIMENTS = {
                 "chttp2_batch_requests",
                 "chttp2_offload_on_rst_stream",
                 "lazier_stream_updates",
-                "overload_protection",
                 "write_size_cap",
                 "write_size_policy",
             ],
@@ -224,6 +224,7 @@ EXPERIMENTS = {
             ],
             "flow_control_test": [
                 "multiping",
+                "overload_protection",
                 "peer_state_based_framing",
                 "red_max_concurrent_streams",
                 "rstpit",
@@ -270,7 +271,6 @@ EXPERIMENTS = {
                 "chttp2_batch_requests",
                 "chttp2_offload_on_rst_stream",
                 "lazier_stream_updates",
-                "overload_protection",
                 "write_size_cap",
                 "write_size_policy",
             ],

src/core/lib/experiments/experiments.cc

@@ -240,7 +240,7 @@ const ExperimentMetadata g_experiment_metadata[] = {
     {"multiping", description_multiping, additional_constraints_multiping,
      false, true},
     {"overload_protection", description_overload_protection,
-     additional_constraints_overload_protection, true, true},
+     additional_constraints_overload_protection, false, true},
     {"peer_state_based_framing", description_peer_state_based_framing,
      additional_constraints_peer_state_based_framing, false, true},
     {"pick_first_happy_eyeballs", description_pick_first_happy_eyeballs,
@@ -521,7 +521,7 @@ const ExperimentMetadata g_experiment_metadata[] = {
     {"multiping", description_multiping, additional_constraints_multiping,
      false, true},
     {"overload_protection", description_overload_protection,
-     additional_constraints_overload_protection, true, true},
+     additional_constraints_overload_protection, false, true},
     {"peer_state_based_framing", description_peer_state_based_framing,
      additional_constraints_peer_state_based_framing, false, true},
     {"pick_first_happy_eyeballs", description_pick_first_happy_eyeballs,
@@ -802,7 +802,7 @@ const ExperimentMetadata g_experiment_metadata[] = {
     {"multiping", description_multiping, additional_constraints_multiping,
      false, true},
     {"overload_protection", description_overload_protection,
-     additional_constraints_overload_protection, true, true},
+     additional_constraints_overload_protection, false, true},
     {"peer_state_based_framing", description_peer_state_based_framing,
      additional_constraints_peer_state_based_framing, false, true},
     {"pick_first_happy_eyeballs", description_pick_first_happy_eyeballs,

src/core/lib/experiments/experiments.h

@@ -91,8 +91,7 @@ inline bool IsMemoryPressureControllerEnabled() { return false; }
 #define GRPC_EXPERIMENT_IS_INCLUDED_MONITORING_EXPERIMENT
 inline bool IsMonitoringExperimentEnabled() { return true; }
 inline bool IsMultipingEnabled() { return false; }
-#define GRPC_EXPERIMENT_IS_INCLUDED_OVERLOAD_PROTECTION
-inline bool IsOverloadProtectionEnabled() { return true; }
+inline bool IsOverloadProtectionEnabled() { return false; }
 inline bool IsPeerStateBasedFramingEnabled() { return false; }
 #define GRPC_EXPERIMENT_IS_INCLUDED_PICK_FIRST_HAPPY_EYEBALLS
 inline bool IsPickFirstHappyEyeballsEnabled() { return true; }
@@ -167,8 +166,7 @@ inline bool IsMemoryPressureControllerEnabled() { return false; }
 #define GRPC_EXPERIMENT_IS_INCLUDED_MONITORING_EXPERIMENT
 inline bool IsMonitoringExperimentEnabled() { return true; }
 inline bool IsMultipingEnabled() { return false; }
-#define GRPC_EXPERIMENT_IS_INCLUDED_OVERLOAD_PROTECTION
-inline bool IsOverloadProtectionEnabled() { return true; }
+inline bool IsOverloadProtectionEnabled() { return false; }
 inline bool IsPeerStateBasedFramingEnabled() { return false; }
 #define GRPC_EXPERIMENT_IS_INCLUDED_PICK_FIRST_HAPPY_EYEBALLS
 inline bool IsPickFirstHappyEyeballsEnabled() { return true; }
@@ -242,8 +240,7 @@ inline bool IsMemoryPressureControllerEnabled() { return false; }
 #define GRPC_EXPERIMENT_IS_INCLUDED_MONITORING_EXPERIMENT
 inline bool IsMonitoringExperimentEnabled() { return true; }
 inline bool IsMultipingEnabled() { return false; }
-#define GRPC_EXPERIMENT_IS_INCLUDED_OVERLOAD_PROTECTION
-inline bool IsOverloadProtectionEnabled() { return true; }
+inline bool IsOverloadProtectionEnabled() { return false; }
 inline bool IsPeerStateBasedFramingEnabled() { return false; }
 #define GRPC_EXPERIMENT_IS_INCLUDED_PICK_FIRST_HAPPY_EYEBALLS
 inline bool IsPickFirstHappyEyeballsEnabled() { return true; }

src/core/lib/experiments/rollouts.yaml

@@ -89,7 +89,7 @@
 - name: monitoring_experiment
   default: true
 - name: overload_protection
-  default: true
+  default: false
 - name: peer_state_based_framing
   default: false
 - name: pick_first_happy_eyeballs