Disable logging for media_cenc_utils_fuzzer.

media/cdm/cenc_utils_fuzzertest.cc

Index: media/cdm/cenc_utils_fuzzertest.cc
diff --git a/media/cdm/cenc_utils_fuzzertest.cc b/media/cdm/cenc_utils_fuzzertest.cc
index 8f656198d6d769c8a86585a9cd7025f9f5076714..8644b399fd3b3e1f9e2eb69079ba0128447eee39 100644
--- a/media/cdm/cenc_utils_fuzzertest.cc
+++ b/media/cdm/cenc_utils_fuzzertest.cc
@@ -6,8 +6,19 @@
 #include <stdint.h>
 #include <vector>
 
+#include "base/logging.h"
 #include "media/cdm/cenc_utils.h"
 
+struct Environment {
+  Environment() {
+    // Disable noisy logging as per "libFuzzer in Chrome" documentation:
+    // testing/libfuzzer/getting_started.md#Disable-noisy-error-message-logging.
+    logging::SetMinLogLevel(logging::LOG_FATAL);
+  }
+};
+
+Environment* env = new Environment();
+
 // Entry point for LibFuzzer.
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   std::vector<uint8_t> input(data, data + size);