-- a/chromium/third_party/WebKit/Source/core/dom/Document.cpp 2020-01-04 14:17:30.623087140 +0100
++ b/chromium/third_party/WebKit/Source/core/dom/Document.cpp 2020-01-04 14:17:51.675085635 +0100
for (unsigned i = 0; i < length;) {
UChar32 c;
U16_NEXT(characters, i, length, c)
U16_NEXT(characters, i, length, c);
if (c == ':') {
if (saw_colon)
return ParseQualifiedNameResult(kQNMultipleColons);