[ios] Adds history user action metrics

ios/chrome/browser/ui/history/history_panel_view_controller.mm

Index: ios/chrome/browser/ui/history/history_panel_view_controller.mm
diff --git a/ios/chrome/browser/ui/history/history_panel_view_controller.mm b/ios/chrome/browser/ui/history/history_panel_view_controller.mm
index 41be2faa97542d813293e05832e1e87c99454cf5..3010ba729d80ff0bc0255b4e611f487a932d14ba 100644
--- a/ios/chrome/browser/ui/history/history_panel_view_controller.mm
+++ b/ios/chrome/browser/ui/history/history_panel_view_controller.mm
@@ -7,6 +7,8 @@
 #include "base/ios/block_types.h"
 #include "base/ios/ios_util.h"
 #include "base/mac/scoped_nsobject.h"
+#include "base/metrics/user_metrics.h"
+#include "base/metrics/user_metrics_action.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/ui/history/clear_browsing_bar.h"
 #import "ios/chrome/browser/ui/history/history_collection_view_controller.h"
@@ -299,6 +301,8 @@ CGFloat kShadowOpacity = 0.2f;
 
 - (void)openPrivacySettings {
   [self exitSearchMode];
+  base::RecordAction(
+      base::UserMetricsAction("HistoryPage_InitClearBrowsingData"));
   ShowClearBrowsingData();
 }
 
@@ -324,6 +328,7 @@ CGFloat kShadowOpacity = 0.2f;
 
 - (void)deleteSelectedItems {
   [_historyCollectionController deleteSelectedItemsFromHistory];
+  base::RecordAction(base::UserMetricsAction("HistoryPage_RemoveSelected"));
   [self exitEditingMode];
 }
 - (void)enterSearchMode {
@@ -337,6 +342,7 @@ CGFloat kShadowOpacity = 0.2f;
   [self.view addSubview:searchBarView];
   _historyCollectionController.get().searching = YES;
   [_searchViewController didMoveToParentViewController:self];
+  base::RecordAction(base::UserMetricsAction("HistoryPage_Search"));
 
   // Constraints to make search bar cover header.
   [searchBarView setTranslatesAutoresizingMaskIntoConstraints:NO];