[ios] Add accessibility identifier for "show history" cell in Recent Tabs

Change-Id: Ib6bcee51114a9fcb05aacd9079d52b65356e18d2
Reviewed-on: https://chromium-review.googlesource.com/1171680
Commit-Queue: Chris Lu <thegreenfrog@chromium.org>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582383}

ios/chrome/browser/ui/ntp/recent_tabs/recent_tabs_constants.h

@@ -11,5 +11,7 @@
 extern NSString* const kCollapsedSectionsKey;
 // Accessibility identifier for the main view.
 extern NSString* const kRecentTabsTableViewControllerAccessibilityIdentifier;
+// Accessibility identifier for the "Show History" cell.
+extern NSString* const kRecentTabsShowFullHistoryCellAccessibilityIdentifier;
 
 #endif  // IOS_CHROME_BROWSER_UI_NTP_RECENT_TABS_RECENT_TABS_CONSTANTS_H_

ios/chrome/browser/ui/ntp/recent_tabs/recent_tabs_constants.mm

@@ -11,3 +11,5 @@
 NSString* const kCollapsedSectionsKey = @"ChromeRecentTabsCollapsedSections";
 NSString* const kRecentTabsTableViewControllerAccessibilityIdentifier =
     @"recent_tabs_view_controller";
+NSString* const kRecentTabsShowFullHistoryCellAccessibilityIdentifier =
+    @"kRecentTabsShowFullHistoryCellAccessibilityIdentifier";

ios/chrome/browser/ui/recent_tabs/recent_tabs_table_view_controller.mm

@@ -215,6 +215,8 @@ const int kRecentlyClosedTabsSectionIndex = 0;
       [[TableViewAccessoryItem alloc] initWithType:ItemTypeShowFullHistory];
   historyItem.title = l10n_util::GetNSString(IDS_HISTORY_SHOWFULLHISTORY_LINK);
   historyItem.image = [UIImage imageNamed:@"show_history"];
+  historyItem.cellAccessibilityIdentifier =
+      kRecentTabsShowFullHistoryCellAccessibilityIdentifier;
   [model addItem:historyItem
       toSectionWithIdentifier:SectionIdentifierRecentlyClosedTabs];
 }

ios/chrome/browser/ui/table_view/cells/table_view_accessory_item.h

@@ -16,6 +16,8 @@
 @property(nonatomic, readwrite, strong) UIImage* image;
 // The title label in the cell.
 @property(nonatomic, readwrite, copy) NSString* title;
+// The accessibility identifier for the cell.
+@property(nonatomic, readwrite, copy) NSString* cellAccessibilityIdentifier;
 
 @end
 

ios/chrome/browser/ui/table_view/cells/table_view_accessory_item.mm

@@ -15,6 +15,7 @@
 
 @implementation TableViewAccessoryItem
 
+@synthesize cellAccessibilityIdentifier = _cellAccessibilityIdentifier;
 @synthesize image = _image;
 @synthesize title = _title;
 
@@ -41,7 +42,7 @@
   }
 
   cell.titleLabel.text = self.title;
-
+  cell.accessibilityIdentifier = self.cellAccessibilityIdentifier;
   cell.imageView.backgroundColor = styler.tableViewBackgroundColor;
   cell.titleLabel.backgroundColor = styler.tableViewBackgroundColor;
   if (styler.cellTitleColor)