commit 45abde5e4bc317fc2e91152b1d66feec93673563
author rlanday <rlanday@chromium.org> Tue May 09 04:08:41 2017
committer Commit bot <commit-bot@chromium.org> Tue May 09 04:08:41 2017
tree 06121950fc68c41bfe18313599231a57646969b9
parent 9f96db6af2442820fed423f5b1b745bc049ae0ad

Add CompositionMarkerListImpl

This is the first of the specialized DocumentMarkerList implementations. It is
currently quite similar to GenericDocumentMarkerListImpl, except it doesn't have
the logic for merging Spelling/Grammar markers, and it doesn't implement the
RemoveMarkersUnderWords() method on DocumentMarkerList that will eventually be
moved to SpellCheckMarkerList. Eventually we will stop creating
RenderedDocumentMarkers in non-TextMatchMarkerLists.

BUG=707867

Review-Url: https://codereview.chromium.org/2820343004
Cr-Commit-Position: refs/heads/master@{#470183}