Reviewed by Pavel Feldman.

        Adds DOMTimer support to InspectorTimelineAgent.
        https://bugs.webkit.org/show_bug.cgi?id=30467

        * inspector/InspectorTimelineAgent.cpp: Added timer support and fixed some method names.
        (WebCore::InspectorTimelineAgent::didDispatchDOMEvent):
        (WebCore::InspectorTimelineAgent::didLayout):
        (WebCore::InspectorTimelineAgent::didRecalculateStyle):
        (WebCore::InspectorTimelineAgent::didPaint):
        (WebCore::InspectorTimelineAgent::didWriteHTML):
        (WebCore::InspectorTimelineAgent::didInstallTimer): Added.
        (WebCore::InspectorTimelineAgent::didRemoveTimer): Added.
        (WebCore::InspectorTimelineAgent::willFireTimer): Added.
        (WebCore::InspectorTimelineAgent::didFireTimer): Added.
        (WebCore::InspectorTimelineAgent::addItemToTimeline): Added.
        (WebCore::InspectorTimelineAgent::didCompleteCurrentTimelineItem): Renamed.
        * inspector/InspectorTimelineAgent.h:
        (WebCore::):
        * inspector/TimelineItemFactory.cpp: Add methods for timer-related ScriptObjects.
        (WebCore::TimelineItemFactory::createGenericTimerTimelineItem):
        (WebCore::TimelineItemFactory::createTimerInstallTimelineItem):
        * inspector/TimelineItemFactory.h:
        * page/DOMTimer.cpp: Added instrumentation points.
        (WebCore::DOMTimer::install):
        (WebCore::DOMTimer::removeById):
        (WebCore::DOMTimer::fired):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@50068 268f45cc-cd09-0410-ab3c-d52691b4dbfc