Re-land: Change the user action file format from .txt to .xml.
In this way, more information can be added (currently added 'description' and 'owner' for each action)
A few functions are moved from tools/metrics/histograms to tools/metrics/common to be shared by tools/metrics and tools/histograms.
CL 149503005 broke in http://crrev.com/255357. Add a patch to fix histograms presubmit.
BUG=340735
NOTRY=true
Review URL: https://codereview.chromium.org/180743027
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255680 0039d316-1c4b-4281-b951-d872f2087c98
15 files changed