Deprecate DevicePages_* UMA actions.

They were replaced in https://crrev.com/224520 in 2013.

Change-Id: Ie95c2028b3935a0c3a20d244bc084519fd7b324e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1699250Reviewed-by: Nik Bhagat <nikunjb@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#676948}

tools/metrics/actions/actions.xml

@@ -5174,46 +5174,55 @@ should be able to be added at any place in this file.
 </action>
 
 <action name="DevicesPage_AddPrintersClicked">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_LogInStartedFromDeviceListPromo">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_LogInStartedFromRegisterPromo">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_ManageClicked">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_Opened">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_RegisterCancel">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_RegisterClicked">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_RegisterFailure">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="DevicesPage_RegisterSuccess">
+  <obsolete>No longer recorded as of Sep 2013.</obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>