[DevTools] Roll inspector_protocol (Chromium)

New revision: 8ec18cf0885bef0b5c2a922c5dc3813cbf63e962

Change-Id: I49b072bb7922647b5cb24d439671ff760be70a63
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1617648Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661139}

third_party/inspector_protocol/README.chromium

@@ -2,7 +2,7 @@ Name: inspector protocol
 Short Name: inspector_protocol
 URL: https://chromium.googlesource.com/deps/inspector_protocol/
 Version: 0
-Revision: 0aafd2876f7485db7b07c513c0457b7cbbbe3304
+Revision: 8ec18cf0885bef0b5c2a922c5dc3813cbf63e962
 License: BSD
 License File: LICENSE
 Security Critical: yes

third_party/inspector_protocol/lib/Values_cpp.template

@@ -178,7 +178,12 @@ std::unique_ptr<DictionaryValue> parseMap(
       key = StringUtil::fromUTF8(key_span.data(), key_span.size());
       tokenizer->Next();
     } else if (tokenizer->TokenTag() == cbor::CBORTokenTag::STRING16) {
-      return nullptr;  // STRING16 not supported yet.
+      span<uint8_t> key_span = tokenizer->GetString16WireRep();
+      if (key_span.size() & 1) return nullptr;  // UTF16 is 2 byte multiple.
+      key = StringUtil::fromUTF16(
+          reinterpret_cast<const uint16_t*>(key_span.data()),
+          key_span.size() / 2);
+      tokenizer->Next();
     } else {
       // Error::CBOR_INVALID_MAP_KEY
       return nullptr;