Fix jumping to a text position when showing a resource.

https://bugs.webkit.org/show_bug.cgi?id=127271

Reviewed by Joseph Pecoraro.

* UserInterface/FrameContentView.js:
(WebInspector.FrameContentView.prototype.showSourceCode): Just use showResponse's arguments
which already does the same logic to call revealPosition.
* UserInterface/ResourceClusterContentView.js:
(WebInspector.ResourceClusterContentView.prototype.restoreFromCookie): This was the bug.
lineNumber and columnNumber need honored here. They were only honored by FrameContentView.
* UserInterface/ResourceSidebarPanel.js:
(WebInspector.ResourceSidebarPanel.prototype.showSourceCode): Use showContentViewForRepresentedObject
which also accepts a cookie and handles creating the content view for us.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@162361 268f45cc-cd09-0410-ab3c-d52691b4dbfc