Use range-for loops in SVGSMILElement::ParseBeginOrEnd

Also drop some unnecessary SMILTime::Value() accessors (we can store
SMILTimes directly in the HashSet nowadays).

Bug: 927232
Change-Id: I6f9231ea24d7941a708e908602f82d34316c8f7d
Reviewed-on: https://chromium-review.googlesource.com/c/1460923
Commit-Queue: Stephen Chenney <schenney@chromium.org>
Auto-Submit: Fredrik Söderquist <fs@opera.com>
Reviewed-by: Stephen Chenney <schenney@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630381}
1 file changed