Rip out code for logging cross-frame property accesses.

Rip out code for logging cross-frame property accesses.

This depends on RenderView overriding a method of WebFrameClient
that was added in http://trac.webkit.org/changeset/56829 but
subsequently removed in http://trac.webkit.org/changeset/56849 .

Since the code has been nonfunctional for over 1 year, I figure it's
safe to remove it.

BUG=none
TEST=none

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=96742

[Nico, 2011-08-14 19:10:32]

I hope these histograms weren't used to make any decisions :-)

[abarth-chromium, 2011-08-14 21:03:10]

LGTM

These were part of an experiment we were running that we never finished.

[commit-bot: I haz the power, 2011-08-14 21:08:13]

Presubmit check for 7645015-1 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Missing LGTM from an OWNER for:
content/renderer/render_view.cc,content/renderer/render_view.h,content/renderer/render_view_observer.h