[ios] Adds OmahaServiceProvider.

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

 // 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.
 
 #ifndef IOS_PUBLIC_PROVIDER_CHROME_BROWSER_TEST_CHROME_BROWSER_PROVIDER_H_
 #define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_TEST_CHROME_BROWSER_PROVIDER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 13 matching lines @@
   // ChromeBrowserProvider:
   void SetChromeIdentityServiceForTesting(
       std::unique_ptr<ChromeIdentityService> service) override;
   ChromeIdentityService* GetChromeIdentityService() override;
   UpdatableResourceProvider* GetUpdatableResourceProvider() override;
   UITextField<TextFieldStyling>* CreateStyledTextField(
       CGRect frame) const override NS_RETURNS_RETAINED;
   NSArray* GetAvailableVoiceSearchLanguages() const override;
   VoiceSearchProvider* GetVoiceSearchProvider() const override;
   AppDistributionProvider* GetAppDistributionProvider() const override;
+  OmahaServiceProvider* GetOmahaServiceProvider() const override;
 
  private:
   std::unique_ptr<AppDistributionProvider> app_distribution_provider_;
   std::unique_ptr<ChromeIdentityService> chrome_identity_service_;
+  std::unique_ptr<OmahaServiceProvider> omaha_service_provider_;
   std::unique_ptr<UpdatableResourceProvider> updatable_resource_provider_;
   std::unique_ptr<VoiceSearchProvider> voice_search_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(TestChromeBrowserProvider);
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_TEST_CHROME_BROWSER_PROVIDER_H_