Disable SitePerProcessInternalsBrowserTest on FYI bots

Newly added SitePerProcessInternalsBrowserTest doesn't work under Viz. So I'm
disabling it on the FYI bots which run viz_content_browsertests

TBR=kylechar@chromium.org
TEST=SitePerProcessInternalsBrowserTest

Bug: 760181
Change-Id: I714080f41f7f5c45811348c8da0a28631c272a35
Reviewed-on: https://chromium-review.googlesource.com/803801Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521032}

testing/buildbot/filters/mojo.fyi.viz.content_browsertests.filter

@@ -28,6 +28,7 @@
 -PointerLockBrowserTest.*
 -SitePerProcessGestureBrowserTest.*
 -SitePerProcessHighDPIBrowserTest.*
+-SitePerProcessInternalsBrowserTest.*
 -SitePerProcessMouseWheelBrowserTest.*
 -TouchSelectionForCrossProcessFramesTests/TouchSelectionControllerClientAuraSiteIsolationTest.*