[inspector_protocol] Limit the size of fuzzy inputs in the correct way.

Bug: None
TBR: alph
Change-Id: I01d1abdc44cde63278512651372a05a6c2778749
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1611726
Commit-Queue: Chris Palmer <palmer@chromium.org>
Reviewed-by: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#660038}

content/browser/devtools/inspector_fuzzer.cc

@@ -14,6 +14,10 @@
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   using namespace inspector_protocol_encoding;
 
+  if (size > 64 * 1024) {
+    return 0;
+  }
+
   span<uint8_t> fuzz{data, size};
 
   // We need to handle whatever the parser parses. So, we handle the parsed

content/test/fuzzer/BUILD.gn

@@ -147,7 +147,6 @@ fuzzer_test("inspector_fuzzer") {
     "//third_party/inspector_protocol:encoding",
   ]
   seed_corpus = "//components/cbor/reader_fuzzer_corpus/"
-  libfuzzer_options = [ "max_len=65535" ]
 }
 
 fuzzer_test("http_structured_header_fuzzer") {