[iOS] Add accessibility labels to Keyboard Accessory View buttons.

ios/chrome/browser/ui/toolbar/new_keyboard_accessory_view.mm

 // Copyright 2017 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/toolbar/new_keyboard_accessory_view.h"
 
 #import <NotificationCenter/NotificationCenter.h>
 
 #include "base/mac/foundation_util.h"
 #include "ios/chrome/browser/experimental_flags.h"
@@ skipping 68 matching lines @@
     [shortcutStackView addArrangedSubview:button];
   }
   [self addSubview:shortcutStackView];
 
   // Create buttons for voice search and camera search.
   UIButton* voiceSearchButton =
       [self iconButton:@"keyboard_accessory_voice_search"];
   [voiceSearchButton addTarget:_delegate
                         action:@selector(keyboardAccessoryVoiceSearchTouchDown)
               forControlEvents:UIControlEventTouchDown];
+  SetA11yLabelAndUiAutomationName(voiceSearchButton,
+                                  IDS_IOS_KEYBOARD_ACCESSORY_VIEW_VOICE_SEARCH,
+                                  @"Voice Search");
   [voiceSearchButton
              addTarget:_delegate
                 action:@selector(keyboardAccessoryVoiceSearchTouchUpInside)
       forControlEvents:UIControlEventTouchUpInside];
   UIButton* cameraButton = [self iconButton:@"keyboard_accessory_qr_scanner"];
   [cameraButton addTarget:_delegate
                    action:@selector(keyboardAccessoryCameraSearchTouchUpInside)
          forControlEvents:UIControlEventTouchUpInside];
+  SetA11yLabelAndUiAutomationName(
+      cameraButton, IDS_IOS_KEYBOARD_ACCESSORY_VIEW_QR_CODE_SEARCH,
+      @"QR code Search");
 
   // Create and add a stackview containing containing the buttons for voice
   // search and camera search.
   UIStackView* searchStackView = [[UIStackView alloc] init];
   searchStackView.translatesAutoresizingMaskIntoConstraints = NO;
   searchStackView.spacing = kBetweenSearchButtonSpacing;
   [searchStackView addArrangedSubview:voiceSearchButton];
   [searchStackView addArrangedSubview:cameraButton];
   [self addSubview:searchStackView];
 
@@ skipping 61 matching lines @@
   return YES;
 }
 
 - (void)keyboardButtonPressed:(id)sender {
   UIButton* button = base::mac::ObjCCastStrict<UIButton>(sender);
   [[UIDevice currentDevice] playInputClick];
   [_delegate keyPressed:[button currentTitle]];
 }
 
 @end