Revert of Add a new enable_nonblocking_io field trial param for QUIC

chrome/browser/io_thread_unittest.cc

Index: chrome/browser/io_thread_unittest.cc
diff --git a/chrome/browser/io_thread_unittest.cc b/chrome/browser/io_thread_unittest.cc
index 12c846c9893953f14bce4ce048c7145e807d6d96..49eded1523c45cb305557575679bb2139699592a 100644
--- a/chrome/browser/io_thread_unittest.cc
+++ b/chrome/browser/io_thread_unittest.cc
@@ -139,7 +139,6 @@
   EXPECT_EQ(0.0f, params.quic_load_server_info_timeout_srtt_multiplier);
   EXPECT_FALSE(params.quic_enable_truncated_connection_ids);
   EXPECT_FALSE(params.quic_enable_connection_racing);
-  EXPECT_FALSE(params.quic_enable_non_blocking_io);
   EXPECT_FALSE(params.quic_disable_disk_cache);
   EXPECT_FALSE(IOThread::ShouldEnableQuicForDataReductionProxy());
 }
@@ -330,15 +329,6 @@
   EXPECT_TRUE(params.quic_enable_connection_racing);
 }
 
-TEST_F(IOThreadTest, QuicEnableNonBlockingIO) {
-  field_trial_group_ = "Enabled";
-  field_trial_params_["enable_non_blocking_io"] = "true";
-  ConfigureQuicGlobals();
-  net::HttpNetworkSession::Params params;
-  InitializeNetworkSessionParams(&params);
-  EXPECT_TRUE(params.quic_enable_non_blocking_io);
-}
-
 TEST_F(IOThreadTest, QuicDisableDiskCache) {
   field_trial_group_ = "Enabled";
   field_trial_params_["disable_disk_cache"] = "true";