Rename ParsedChunk to TokenizedChunk in core/html/parser

This patch runs
s/ParsedChunk/TokenizedChunk/g
s/parsedChunk/tokenizedChunk/g

in core/html/parser. ParsedChunk is badly named as it only contains
chunks of tokens.

BUG=

Review-Url: https://codereview.chromium.org/2181943002
Cr-Commit-Position: refs/heads/master@{#407773}
7 files changed