Web Inspector: prepare border images on timelines to enable zooming.

Web Inspector: prepare border images on timelines to enable zooming.
https://bugs.webkit.org/show_bug.cgi?id=79360

Reviewed by Yury Semikhatsky.

* inspector/front-end/Images/timelineBarBlue.png:
* inspector/front-end/Images/timelineBarGray.png:
* inspector/front-end/Images/timelineBarGreen.png:
* inspector/front-end/Images/timelineBarOrange.png:
* inspector/front-end/Images/timelineBarPurple.png:
* inspector/front-end/Images/timelineBarRed.png:
* inspector/front-end/Images/timelineBarYellow.png:
* inspector/front-end/Images/timelineHollowPillBlue.png:
* inspector/front-end/Images/timelineHollowPillGray.png:
* inspector/front-end/Images/timelineHollowPillGreen.png:
* inspector/front-end/Images/timelineHollowPillOrange.png:
* inspector/front-end/Images/timelineHollowPillPurple.png:
* inspector/front-end/Images/timelineHollowPillRed.png:
* inspector/front-end/Images/timelineHollowPillYellow.png:
* inspector/front-end/Images/timelinePillBlue.png:
* inspector/front-end/Images/timelinePillGray.png:
* inspector/front-end/Images/timelinePillGreen.png:
* inspector/front-end/Images/timelinePillOrange.png:
* inspector/front-end/Images/timelinePillPurple.png:
* inspector/front-end/Images/timelinePillRed.png:
* inspector/front-end/Images/timelinePillYellow.png:
* inspector/front-end/inspectorCommon.css:
(body):
* inspector/front-end/networkLogView.css:
(.network-graph-bar):
(.resource-cached .network-graph-bar):
(.network-category-documents .network-graph-bar):
(.network-category-documents.resource-cached .network-graph-bar):
(.network-category-stylesheets .network-graph-bar):
(.network-category-stylesheets.resource-cached .network-graph-bar):
(.network-category-images.resource-cached .network-graph-bar):
(.network-category-fonts .network-graph-bar):
(.network-category-fonts.resource-cached .network-graph-bar):
(.network-category-scripts .network-graph-bar):
(.network-category-scripts.resource-cached .network-graph-bar):
(.network-category-xhr .network-graph-bar):
(.network-category-xhr.resource-cached .network-graph-bar):
(.network-category-websockets .network-graph-bar):
(.network-category-websockets.resource-cached .network-graph-bar):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108745 268f45cc-cd09-0410-ab3c-d52691b4dbfc