Added PrintPreview.InitializationTime histogram.

BUG=315315

Review URL: https://codereview.chromium.org/61213011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236102 0039d316-1c4b-4281-b951-d872f2087c98
Refactor variations ProcessedStudy class.

Makes ProcessedStudy a class with accessors, rather than a struct and
adds an Init method. Moves ValidateStudyAndComputeTotalProbability()
to processed_study.cc.

BUG=315807

Review URL: https://codereview.chromium.org/75553003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236103 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236103
Update web_preferences to call the new setAccessibilityFontScaleFactor

https://codereview.chromium.org/74663002 updated the setting from
setTextAutosizingontScaleFactor to setAccessibilityFontScaleFactor.
This patch is the chromium-side update to the new API.

This depends on https://codereview.chromium.org/74663002 landing.

BUG=320193

Review URL: https://codereview.chromium.org/75793002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236104 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236104
Downgrade a few net warnings that are spammy on Chrome OS.

Use VLOG(1) instead of LOG(WARNING) for the following
messages:

  [1100:1268:1009/125256:WARNING:dns_socket_pool.cc(85)]
  Failed to connect socket: -109

  [15162:16935:1031/172646:WARNING:address_sorter_posix.cc(305)]
  Could not connect to <address> reason -109

BUG=305883

Review URL: https://codereview.chromium.org/76073004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236105 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236105