Revert 209710 "Reland "Shouldn't access LayerTreeTest::layer_tre..."

> Reland "Shouldn't access LayerTreeTest::layer_tree_host on impl thread"
> 
> As Dana mentioned on the bug, the troublesome test doesn't make sense with impl painting. I've disabled it as suggested.
> 
> BUG=235188
> 
> Review URL: https://chromiumcodereview.appspot.com/18454002

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Review URL: https://codereview.chromium.org/18543011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@209805 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed