Adds histograms for casting feature of Video Player

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 390d16b471b27d442d6a9ecbc1a922645f0cfb90..e3008b60339886236038c63a9a758b84db6c9c9d 100644
--- a/tools/metrics/actions/actions.xml
+++ b/tools/metrics/actions/actions.xml
@@ -11375,6 +11375,18 @@ should be able to be added at any place in this file.
   <obsolete>Removed from codebase; see GoogleUpdate.UpgradeResult.</obsolete>
 </action>
 
+<action name="VideoPlayer.NumberOfCastDevice">
+  <owner>yoshiki@chromium.org</owner>
+  <description>Chrome OS Video Player: the number of cast devices.</description>
+</action>

[Ilya Sherman, 2014/12/09 01:57:48]

This sounds like it should be a histogram rather than an action.  What does "the
number of cast devices" mean as aan action?

[yoshiki, 2014/12/10 03:20:50]

Sorry, that was my mistake. I added NumberOfCastDevice instead of CastVideoError
by mistake.

+
+<action name="VideoPlayer.OpenVideoPlayer">
+  <owner>yoshiki@chromium.org</owner>
+  <description>
+    Chrome OS Video Player: this is recorded when user opens video player.

[Ilya Sherman, 2014/12/09 01:57:48]

Optional nit: I'd rephrase slightly as: "The user opened the Chrome OS Video
Player".

[yoshiki, 2014/12/10 03:20:50]

Thanks for guidance! Done.

+  </description>
+</action>
+
 <action name="ViewAboutConflicts">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>