[ios] Adds configuration helper files for voice search.

ios/public/provider/chrome/browser/test_chrome_browser_provider.mm

 // Copyright 2013 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.
 
 #include "ios/public/provider/chrome/browser/test_chrome_browser_provider.h"
 
 #import <UIKit/UIKit.h>
 
 #include "base/logging.h"
+#include "base/mac/scoped_nsobject.h"
 #include "base/memory/ptr_util.h"
 #include "ios/public/provider/chrome/browser/signin/fake_chrome_identity_service.h"
 #import "ios/public/provider/chrome/browser/test_updatable_resource_provider.h"
+#import "ios/public/provider/chrome/browser/voice/voice_search_language.h"
 
 @interface TestStyledTextField : UITextField<TextFieldStyling>
 @end
 
 @implementation TestStyledTextField
 @synthesize placeholderStyle = _placeholderStyle;
 @synthesize textValidator = _textValidator;
 
 - (void)setUseErrorStyling:(BOOL)error {
 }
@@ skipping 28 matching lines @@
 UpdatableResourceProvider*
 TestChromeBrowserProvider::GetUpdatableResourceProvider() {
   return test_updatable_resource_provider_.get();
 }
 
 UITextField<TextFieldStyling>* TestChromeBrowserProvider::CreateStyledTextField(
     CGRect frame) const {
   return [[TestStyledTextField alloc] initWithFrame:frame];
 }
 
+NSArray* TestChromeBrowserProvider::GetAvailableVoiceSearchLanguages() const {
+  base::scoped_nsobject<VoiceSearchLanguage> en([[VoiceSearchLanguage alloc]
+          initWithIdentifier:@"en-US"
+                 displayName:@"English (US)"
+      localizationPreference:nil]);
+  return @[ en ];
+}
+
 }  // namespace ios