[fsp] Add histograms for opening files.
commita7de9693f066e9e047b2ace506ae7dabc26e25f1
authormtomasz@chromium.org <mtomasz@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Tue, 13 May 2014 02:14:14 +0000 (13 02:14 +0000)
committermtomasz@chromium.org <mtomasz@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Tue, 13 May 2014 02:14:14 +0000 (13 02:14 +0000)
tree34eb10321f28720ea96da9ee3295510e09134c4f
parent484a87d63231ab6c4c0fc5bf274fbd8d3780450d
[fsp] Add histograms for opening files.

This is a split of https://codereview.chromium.org/284443002/, to avoid
merging issues.

It is almost impossible to land a CL adding histograms via CQ, without
a merging conflict.

TBR=isherman@chromium.org
TEST=Just histograms, no actual changes.
BUG=248427

Review URL: https://codereview.chromium.org/288483002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@269968 0039d316-1c4b-4281-b951-d872f2087c98
extensions/browser/extension_function_histogram_value.h
tools/metrics/histograms/histograms.xml