[ios] Adds history user action metrics

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/ui/history/history_panel_view_controller.h"
 
 #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"
 #import "ios/chrome/browser/ui/history/history_search_view_controller.h"
 #import "ios/chrome/browser/ui/icons/chrome_icon.h"
 #import "ios/chrome/browser/ui/material_components/utils.h"
 #import "ios/chrome/browser/ui/ntp/recent_tabs/views/panel_bar_view.h"
 #import "ios/chrome/browser/ui/show_privacy_settings_util.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #import "ios/chrome/browser/ui/url_loader.h"
@@ skipping 272 matching lines @@
   [self closeHistoryWithCompletion:nil];
 }
 
 - (void)closeHistoryWithCompletion:(ProceduralBlock)completion {
   [self.presentingViewController dismissViewControllerAnimated:YES
                                                     completion:completion];
 }
 
 - (void)openPrivacySettings {
   [self exitSearchMode];
+  base::RecordAction(
+      base::UserMetricsAction("HistoryPage_InitClearBrowsingData"));
   ShowClearBrowsingData();
 }
 
 - (void)enterEditingMode {
   [_historyCollectionController setEditing:YES];
   [_clearBrowsingBar setEditing:YES];
   if (_historyCollectionController.get().searching) {
     [_searchViewController setEnabled:NO];
   }
   DCHECK([_historyCollectionController isEditing]);
   [self configureNavigationBar];
 }
 
 - (void)exitEditingMode {
   [_historyCollectionController setEditing:NO];
   [_clearBrowsingBar setEditing:NO];
   if (_historyCollectionController.get().searching) {
     [_searchViewController setEnabled:YES];
   }
   DCHECK(![_historyCollectionController isEditing]);
   [self configureNavigationBar];
 }
 
 - (void)deleteSelectedItems {
   [_historyCollectionController deleteSelectedItemsFromHistory];
+  base::RecordAction(base::UserMetricsAction("HistoryPage_RemoveSelected"));
   [self exitEditingMode];
 }
 - (void)enterSearchMode {
   if (!_searchViewController) {
     _searchViewController.reset([[HistorySearchViewController alloc] init]);
     [_searchViewController setDelegate:self];
   }
 
   UIView* searchBarView = [_searchViewController view];
   [_searchViewController willMoveToParentViewController:self];
   [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];
   MDCFlexibleHeaderView* headerView =
       _appBar.get().headerViewController.headerView;
   NSArray* constraints = @[
     [[searchBarView topAnchor] constraintEqualToAnchor:headerView.topAnchor],
     [[searchBarView leadingAnchor]
         constraintEqualToAnchor:headerView.leadingAnchor],
     [[searchBarView heightAnchor]
@@ skipping 22 matching lines @@
 
 - (void)configureClearBrowsingBar {
   _clearBrowsingBar.get().editing = _historyCollectionController.get().editing;
   _clearBrowsingBar.get().deleteButtonEnabled =
       [_historyCollectionController hasSelectedEntries];
   _clearBrowsingBar.get().editButtonEnabled =
       [_historyCollectionController hasHistoryEntries];
 }
 
 @end