DevTools: Set the timeline window to match the recorded time interval.
DevTools: Set the timeline window to match the recorded time interval.

When objects tracking is recorded make the timeline overview selection window
set to the recorded interval instead of entire time span.

R=loislo@chromium.org

Review URL: https://codereview.chromium.org/15859002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@151079 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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