The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b24d2336dc516900281fc2034adaddc29769e3a5

commit b24d2336dc516900281fc2034adaddc29769e3a5
Author: ryansturm <ryansturm@chromium.org>
Date: Fri May 05 23:35:05 2017

Add support to previews/ for Server LoFi and LitePages

This adds support for using the previews blacklist for LoFi and
LitePages as well as adding histograms for LoFi and LitePages within the
previews framework.

BUG= 703293 

Review-Url: https://codereview.chromium.org/2760063002
Cr-Commit-Position: refs/heads/master@{#469800}

[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/chrome/browser/loader/chrome_resource_dispatcher_host_delegate.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/chrome/browser/previews/previews_service.cc
[add] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/chrome/browser/previews/previews_service_unittest.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/chrome/test/BUILD.gn
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_black_list.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_black_list.h
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_decider.h
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_experiments.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_experiments.h
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_experiments_unittest.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_io_data.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_io_data.h
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/components/previews/core/previews_io_data_unittest.cc
[modify] https://crrev.com/b24d2336dc516900281fc2034adaddc29769e3a5/tools/metrics/histograms/histograms.xml