Add bookmark bar/manager actions to track drag and drop.

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 bd18a32039164e29e5725601be278a04be66b4b0..05693aada6e01da36509355756cc614306a215c0 100644
--- a/tools/metrics/actions/actions.xml
+++ b/tools/metrics/actions/actions.xml
@@ -2320,6 +2320,13 @@ should be able to be added at any place in this file.
   <description>Please enter the description of this user action.</description>
 </action>
 
+<action name="BookmarkManager_Drop">
+  <owner>calamity@chromium.org</owner>
+  <description>
+    Fired when a user drops a bookmark after a drag in the bookmark manager.
+  </description>
+</action>
+
 <action name="BookmarkManager_Export">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
@@ -2365,6 +2372,13 @@ should be able to be added at any place in this file.
   <description>Please enter the description of this user action.</description>
 </action>
 
+<action name="BookmarkManager_StartDrag">
+  <owner>calamity@chromium.org</owner>
+  <description>
+    Fired when a user starts a drag in the bookmark manager.
+  </description>
+</action>
+
 <action name="BookmarkManager_Sync">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>