Revert 242121 "Reland "Add a HistogramRecorder class and use cas..."

Revert 242121 "Reland "Add a HistogramRecorder class and use cas..."

As per request from lpromero, reverting since it might be failing a
test - see

http://build.chromium.org/p/chromium.memory.fyi/builders/Windows%20Tests%20%28tsan%29/builds/17153/steps/memory%20test%3A%20base_unittests/logs/stdio

[ RUN      ] HistogramTest.BasicTest
[3824:2780:1220/111332:4747750:FATAL:statistics_recorder.cc(270)] Check failed: !histograms_.

TBR=lpromero@chromium.org

> Reland "Add a HistogramRecorder class and use cases."
> 
> This CL adds a utility class to streamline the task of testing that metrics have been updated as expected. Specifically, the HistogramRecorder class allows a client to obtain the differential value of a given histogram in the interval since the given HistogramRecorder instance was created.
> 
> This reverts commit b957026f43ef9464a8cdd5a240867c807b2281da.
> 
> BUG=232414
> TBR=rsleevi, mark, groby, thakis
> 
> Review URL: https://codereview.chromium.org/19866004

TBR=lpromero@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=242176

[groby-ooo-7-16, 2013-12-20 21:14:24]

Committed patchset #1 manually as r242176.

[lpromero, 2013-12-23 09:27:22]

lgtm