Remove updateRoot from RenderLayerCompositor::updateCompositingLayers()

This value is actually not meaningful after deferred compositing.
If we want to re-introduce support for this, it will need more hefty
restructuring anyway, so it's better to simplify the code for now.

Review URL: https://codereview.chromium.org/55243008

git-svn-id: svn://svn.chromium.org/blink/trunk@161220 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: make network and console filters fit the bar, make filter appear after clear at all times

TBR=vsevik

Review URL: https://codereview.chromium.org/56823002

git-svn-id: svn://svn.chromium.org/blink/trunk@161221 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: clicking on console filter input brings focus to console prompt
Regressed in r161076

TBR=vsevik

BUG=314331

Review URL: https://codereview.chromium.org/49293005

git-svn-id: svn://svn.chromium.org/blink/trunk@161222 bbb929c8-8fbe-4397-9dbb-9b2b20218538