Disable noisy logging for //net fuzz targets.

net/base/fuzzer_test_support.cc

Index: net/base/fuzzer_test_support.cc
diff --git a/net/base/fuzzer_test_support.cc b/net/base/fuzzer_test_support.cc
index f355c8808e6fc8a2418828d12014bd38355c029c..0b97dfbacdc117d7d6151d48ddf2fa5702d82167 100644
--- a/net/base/fuzzer_test_support.cc
+++ b/net/base/fuzzer_test_support.cc
@@ -24,6 +24,10 @@ struct InitGlobals {
     // Prevent every call to get a Histogram* from leaking memory. Instead, only
     // the fist call to get each Histogram* leaks memory.
     base::StatisticsRecorder::Initialize();
+
+    // Disable noisy logging as per "libFuzzer in Chrome" documentation:
+    // testing/libfuzzer/getting_started.md#Disable-noisy-error-message-logging.
+    logging::SetMinLogLevel(logging::LOG_FATAL);
   }
 
   // A number of tests use async code which depends on there being a message