Make resizing the docked Web Inspector stay in sync with the inspected view.

https://webkit.org/b/114682

Reviewed by Joseph Pecoraro.

* UIProcess/mac/WebInspectorProxyMac.mm:
(WebKit::WebInspectorProxy::inspectedViewFrameDidChange):
Disable screen updates to make sure the layers for both views resize in sync.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148538 268f45cc-cd09-0410-ab3c-d52691b4dbfc