- Refactors the _editDraft property of gr-diff-comment to _messageText.
- Renames the gr-storage element as instantiated in gr-diff-comment from
"localStorage" to "storage".
- The gr-storage diff comment functions are refactored to include
"comment" in their names and to accept a location object rather than 4
separate arguments.
- Added a comment describing the use of a promise in the _loadLocalDraft
method of gr-diff-comment.
- Throttled the invocation of the _cleanupDrafts method of gr-storage to
avoid potentially expensive crawls over all localStorage entries.
- Various other smaller fixes.
Bug: Issue 3787
Change-Id: Idf96051c0d56d6ce8b15f55ca2680363bd1ca805