chromium/third_party/blink/web_tests/fast/encoding/namespace-tolerance.html

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This test ensures a UTF-8 encoding is properly set on documents that:
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(1) use namespace prefixes on HTML elements
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(2) specify a non-latin charset 
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(3) contain non-latin characters
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If this test passes, the UTF-8 character below should exactly match the character the character in namespace-tolerance-expected.txt.
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