[ios] Adds BrandedImageProvider and its associated image resources.

ios/chrome/browser/providers/images/chromium_branded_image_provider.h

+// 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.
+
+#ifndef IOS_CHROME_BROWSER_PROVIDERS_IMAGES_CHROMIUM_BRANDED_IMAGE_PROVIDER_H_
+#define IOS_CHROME_BROWSER_PROVIDERS_IMAGES_CHROMIUM_BRANDED_IMAGE_PROVIDER_H_
+
+#include "ios/public/provider/chrome/browser/images/branded_image_provider.h"
+
+class ChromiumBrandedImageProvider : public BrandedImageProvider {
+ public:
+  ChromiumBrandedImageProvider();
+  ~ChromiumBrandedImageProvider() override;
+
+  // BrandedImageProvider.
+  UIImage* GetAccountsListActivityControlsImage() override;
+  UIImage* GetClearBrowsingDataAccountActivityImage() override;
+  UIImage* GetClearBrowsingDataSiteDataImage() override;
+  UIImage* GetContextualSearchHeaderImage() override;
+  UIImage* GetSigninConfirmationSyncSettingsImage() override;
+  UIImage* GetSigninConfirmationPersonalizeServicesImage() override;
+  bool GetToolbarVoiceSearchButtonImageId(int* image_id) override;
+  UIImage* GetWhatsNewIconImage(WhatsNewIcon type) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChromiumBrandedImageProvider);
+};
+
+#endif  // IOS_CHROME_BROWSER_PROVIDERS_IMAGES_CHROMIUM_BRANDED_IMAGE_PROVIDER_H_