Read later: Add user action metrics

Add user action metrics for:
- Clicking to open the reading list
- Adding to the reading list from the Bookmark icon entry point
- Adding to the reading list from the tab context menu

Bug: 1163938
Change-Id: I95d655ce60f5b76c80f4d3b6a8490310befa8fac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622315
Commit-Queue: Caroline Rising <corising@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Dana Fried <dfried@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842589}

chrome/browser/ui/tabs/tab_strip_model.cc

@@ -1419,6 +1419,8 @@ void TabStripModel::ExecuteContextMenuCommand(int context_index,
     }
 
     case CommandAddToReadLater: {
+      base::RecordAction(
+          UserMetricsAction("DesktopReadingList.AddItem.FromTabContextMenu"));
       AddToReadLater(GetIndicesForCommand(context_index));
       break;
     }

chrome/browser/ui/views/location_bar/star_view.cc

@@ -8,6 +8,8 @@
 
 #include "base/metrics/histogram_functions.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/metrics/user_metrics.h"
+#include "base/metrics/user_metrics_action.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/defaults.h"
@@ -140,6 +142,8 @@ void StarView::ExecuteCommand(int command_id, int event_flags) {
       break;
     case StarMenuModel::CommandMoveToReadLater:
       RecordClick(Action::kAddToReadingListButton);
+      base::RecordAction(base::UserMetricsAction(
+          "DesktopReadingList.AddItem.FromBookmarkIcon"));
       chrome::MoveCurrentTabToReadLater(browser_);
       break;
     case StarMenuModel::CommandMarkAsRead:

chrome/browser/ui/views/read_later/read_later_button.cc

@@ -4,6 +4,8 @@
 
 #include "chrome/browser/ui/views/read_later/read_later_button.h"
 
+#include "base/metrics/user_metrics.h"
+#include "base/metrics/user_metrics_action.h"
 #include "base/strings/string16.h"
 #include "chrome/app/vector_icons/vector_icons.h"
 #include "chrome/browser/profiles/profile.h"
@@ -119,6 +121,8 @@ void ReadLaterButton::ButtonPressed() {
     if (webui_bubble_manager_->GetBubbleWidget()) {
       webui_bubble_manager_->CloseBubble();
     } else {
+      base::RecordAction(
+          base::UserMetricsAction("DesktopReadingList.OpenReadingList"));
       webui_bubble_manager_->ShowBubble();
     }
   }

tools/metrics/actions/actions.xml

@@ -5893,6 +5893,32 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
+<action name="DesktopReadingList.AddItem.FromBookmarkIcon">
+  <owner>corising@chromium.org</owner>
+  <owner>chrome-desktop-ui-sea@google.com</owner>
+  <description>
+    The user added to the reading list from the Bookmark icon entry point
+    (Desktop only).
+  </description>
+</action>
+
+<action name="DesktopReadingList.AddItem.FromTabContextMenu">
+  <owner>corising@chromium.org</owner>
+  <owner>chrome-desktop-ui-sea@google.com</owner>
+  <description>
+    The user added to the reading list from the tab context menu entry point
+    (Desktop only).
+  </description>
+</action>
+
+<action name="DesktopReadingList.OpenReadingList">
+  <owner>corising@chromium.org</owner>
+  <owner>chrome-desktop-ui-sea@google.com</owner>
+  <description>
+    The user clicked the Desktop reading list button to open the reading list.
+  </description>
+</action>
+
 <action name="DesktopSearch">
   <obsolete>
     Deprecated 05/2016 because desktop searches are no longer opened in the