Remove temporary <p> elements from printing tests.

The <p> elements were introduced temporarily in [1]. The blink bug is rolled
in, hence the <p> elements can be removed.

[1] https://src.chromium.org/viewvc/chrome?view=rev&revision=227076

R=vitalybuka@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/26914004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228563 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228563
Revert "Simplify InputRouter event filtering"

This reverts r228554 due to linux asan failure:

http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20%283%29/builds/16857/steps/interactive_ui_tests/logs/HandlersRegistered

TBR=jdduke
BUG=302492

Review URL: https://codereview.chromium.org/26343004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228567 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228567