chrome/blink: Add functionality for in-product help for media elements.

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 12ad253ef3c1624e7f6be63be51da8550ef5ab90..8500d38c40fcb02818fafd47ea6fabfeef1d2245 100644
--- a/tools/metrics/actions/actions.xml
+++ b/tools/metrics/actions/actions.xml
@@ -5303,6 +5303,12 @@ should be able to be added at any place in this file.
   <description>The user triggered an event in in-product help.</description>
 </action>
 
+<action name="InProductHelp.NotifyEvent.IPH_MediaDownload">
+  <owner>nyquist@chromium.org</owner>
+  <owner>xingliu@chromium.org</owner>
+  <description>The user triggered an event in in-product help.</description>
+</action>
+
 <action name="InProductHelp.NotifyEvent.IPH_NewIncognitoTabTip">
   <owner>edchin@chromium.org</owner>
   <owner>gchatz@chromium.org</owner>
@@ -5367,6 +5373,12 @@ should be able to be added at any place in this file.
   <description>The user triggered a used event in in-product help.</description>
 </action>
 
+<action name="InProductHelp.NotifyUsedEvent.IPH_MediaDownload">
+  <owner>nyquist@chromium.org</owner>
+  <owner>xingliu@chromium.org</owner>
+  <description>The user triggered a used event in in-product help.</description>
+</action>
+
 <action name="InProductHelp.NotifyUsedEvent.IPH_NewIncognitoTabTip">
   <owner>edchin@chromium.org</owner>
   <owner>gchatz@chromium.org</owner>
@@ -5448,6 +5460,15 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
+<action name="InProductHelp.ShouldTriggerHelpUI.IPH_MediaDownload">
+  <owner>nyquist@chromium.org</owner>
+  <owner>xingliu@chromium.org</owner>
+  <description>
+    The feature engagement tracker tried to determine whether in-product help
+    should be shown to the user.
+  </description>
+</action>
+
 <action name="InProductHelp.ShouldTriggerHelpUI.IPH_NewIncognitoTabTip">
   <owner>edchin@chromium.org</owner>
   <owner>gchatz@chromium.org</owner>
@@ -5538,6 +5559,15 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
+<action
+    name="InProductHelp.ShouldTriggerHelpUIResult.NotTriggered.IPH_MediaDownload">
+  <owner>nyquist@chromium.org</owner>
+  <owner>xingliu@chromium.org</owner>
+  <description>
+    A user action that could have triggered In-Product Help did not.
+  </description>
+</action>
+
 <action
     name="InProductHelp.ShouldTriggerHelpUIResult.NotTriggered.IPH_NewIncognitoTabTip">
   <owner>edchin@chromium.org</owner>
@@ -5613,6 +5643,13 @@ should be able to be added at any place in this file.
   <description>A user action triggered In-Product Help.</description>
 </action>
 
+<action
+    name="InProductHelp.ShouldTriggerHelpUIResult.Triggered.IPH_MediaDownload">
+  <owner>nyquist@chromium.org</owner>
+  <owner>xingliu@chromium.org</owner>
+  <description>A user action triggered In-Product Help.</description>
+</action>
+
 <action
     name="InProductHelp.ShouldTriggerHelpUIResult.Triggered.IPH_NewIncognitoTabTip">
   <owner>edchin@chromium.org</owner>