Perf: Associate page set with existing WPR

The tough_animation_cases page set contains the live site
http://ie.microsoft.com/testdrive/performance/robohornetpro/
but has not specified a WPR of the site for perf bots to use.

This patch associates this page set with an existing WPR of the site used
by other benchmarks for the same site.


BUG=309981

Review URL: https://codereview.chromium.org/173353002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252444 0039d316-1c4b-4281-b951-d872f2087c98
Compile YUV conversion code from src/media for PNaCl

Added new target called media_yuv_nacl that compiles YUV utils in
src/media for PNaCl.

BUG=276739
R=scherkus@chromium.org

Review URL: https://codereview.chromium.org/166323013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252445 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252445