Clean up Media_* actions by marking them obsolete and not_user_trigerred.

tools/metrics/actions/actions.xml

Index: tools/metrics/actions/actions.xml
diff --git a/tools/metrics/actions/actions.xml b/tools/metrics/actions/actions.xml
index 0f798ce8a82e96ec926b2a930fc8b7afa9fad359..68daef9fd901bfbeded56c86529c03e158fb4a89 100644
--- a/tools/metrics/actions/actions.xml
+++ b/tools/metrics/actions/actions.xml
@@ -8557,34 +8557,43 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
-<action name="Media_Paused">
+<action name="Media_Paused" not_user_triggered="true">

[Ilya Sherman, 2016/07/25 18:41:58]

nit: Seems like the not_user_triggered flag shouldn't be needed if the action is
obsolete.  (Ditto for the others.)

[mlamouri (slow - plz ping), 2016/07/26 17:29:52]

Maybe it's better to mark them properly even if it is retroactive? I want to
make sure the tool I'm using will not show these actions even if they were
registered.

[Ilya Sherman, 2016/07/26 19:17:24]

It's not entirely obvious to me that it's "correct" to mark these as
non-user-triggered (since I'd imagine they typically are)... but I also don't
feel very strongly about this, so LGTM.

   <owner>liberato@chromium.org</owner>
-  <description>Media playback was paused.</description>
+  <description>
+    Media playback was paused, either from script or controls.
+  </description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
 <action name="Media_Play_WithGesture">
   <owner>liberato@chromium.org</owner>
   <description>A call to play() with a user gesture succeeded.</description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
-<action name="Media_Playback_Ended">
+<action name="Media_Playback_Ended" not_user_triggered="true">
   <owner>liberato@chromium.org</owner>
   <description>Media playback reached the end.</description>
 </action>
 
-<action name="Media_Playback_Mute_Off">
+<action name="Media_Playback_Mute_Off" not_user_triggered="true">
   <owner>liberato@chromium.org</owner>
-  <description>Mute was turned off.</description>
+  <description>
+    Mute was turned off, either from script or controls.
+  </description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
-<action name="Media_Playback_Mute_On">
+<action name="Media_Playback_Mute_On" not_user_triggered="true">
   <owner>liberato@chromium.org</owner>
-  <description>Mute was turned on.</description>
+  <description>Mute was turned on, either from script or controls.</description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
-<action name="Media_Playback_Started">
+<action name="Media_Playback_Started" not_user_triggered="true">
   <owner>liberato@chromium.org</owner>
   <description>Media playback started due to any cause.</description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
 <action name="Media_RequestRemotePlayback">
@@ -8592,6 +8601,7 @@ should be able to be added at any place in this file.
   <description>
     User requested to transfer playback to a remote player, via 'cast' button.
   </description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
 <action name="Media_RequestRemotePlayback_Control">
@@ -8599,16 +8609,21 @@ should be able to be added at any place in this file.
   <description>
     User requested to control playback of a remote player, such as Chromecast.
   </description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
-<action name="Media_Seeked">
+<action name="Media_Seeked" not_user_triggered="true">
   <owner>liberato@chromium.org</owner>
-  <description>Seek to different time completed.</description>
+  <description>Seek originating from script or controls completed.</description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
-<action name="Media_SetVolume">
+<action name="Media_SetVolume" not_user_triggered="true">
   <owner>liberato@chromium.org</owner>
-  <description>Playback volume was changed.</description>
+  <description>
+    Playback volume was changed, either from script or controls.
+  </description>
+  <obsolete>No longer recorded.</obsolete>
 </action>
 
 <action name="Menu_Take_Screenshot">