Start fleshing out the new TimelineSidebarPanel and TimelineContentView.

https://bugs.webkit.org/show_bug.cgi?id=124003

Reviewed by Joseph Pecoraro.

* UserInterface/ContentView.js:
(WebInspector.ContentView):
(WebInspector.ContentView.isViewable):
* UserInterface/FrameContentView.js:
* UserInterface/Images/CloseTimeline.png: Added.
* UserInterface/Images/CloseTimeline@2x.png: Added.
* UserInterface/Images/ColorsLarge.png: Added.
* UserInterface/Images/ColorsLarge@2x.png: Added.
* UserInterface/Images/NetworkLarge.png: Added.
* UserInterface/Images/NetworkLarge@2x.png: Added.
* UserInterface/Images/ScriptLarge.png: Added.
* UserInterface/Images/ScriptLarge@2x.png: Added.
* UserInterface/Main.html:
* UserInterface/Main.js:
(WebInspector.sidebarPanelForRepresentedObject):
(WebInspector._revealAndSelectRepresentedObjectInNavigationSidebar):
* UserInterface/NavigationSidebarPanel.js:
(WebInspector.NavigationSidebarPanel.prototype.showDefaultContentView):
* UserInterface/ResourceClusterContentView.js:
* UserInterface/TimelineContentView.css: Added.
(.content-view.timeline > .view-container):
* UserInterface/TimelineContentView.js: Added.
(WebInspector.TimelineContentView):
* UserInterface/TimelineIcons.css: Renamed from Source/WebInspectorUI/UserInterface/InstrumentIcons.css.
(.network-icon.large .icon): Added.
(.colors-icon.large .icon): Added.
(.script-icon.large .icon): Added.
* UserInterface/TimelineSidebarPanel.css:
(.sidebar > .panel.timeline > .navigation-bar):
(.sidebar > .panel.timeline > .title-bar):
(.sidebar > .panel.timeline > .title-bar.timelines):
(.sidebar > .panel.timeline > .title-bar.timeline-events):
(.sidebar > .panel.timeline > .timelines-content):
(.sidebar > .panel.timeline > .timelines-content .close-button):
(.sidebar > .panel.timeline > .timelines-content li.item.selected .close-button):
(.sidebar > .panel.timeline > .timelines-content .close-button:active):
(.sidebar > .panel.timeline > .content):
* UserInterface/TimelineSidebarPanel.js:
(WebInspector.TimelineSidebarPanel.createTimelineTreeElement):
(WebInspector.TimelineSidebarPanel):
(WebInspector.TimelineSidebarPanel.prototype.showDefaultContentView):
(WebInspector.TimelineSidebarPanel.prototype.treeElementForRepresentedObject):
(WebInspector.TimelineSidebarPanel.prototype.get contentTreeOutlineLabel):
(WebInspector.TimelineSidebarPanel.prototype.set contentTreeOutlineLabel):
(WebInspector.TimelineSidebarPanel.prototype.showTimelineOverview):
(WebInspector.TimelineSidebarPanel.prototype.showTimelineView):
(WebInspector.TimelineSidebarPanel.prototype._timelinesTreeElementSelected):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@162403 268f45cc-cd09-0410-ab3c-d52691b4dbfc