[ios] Adds BrandedImageProvider and its associated image resources.

ios/public/provider/chrome/browser/images/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_PUBLIC_PROVIDER_CHROME_BROWSER_IMAGES_BRANDED_IMAGE_PROVIDER_H_
+#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_IMAGES_BRANDED_IMAGE_PROVIDER_H_
+
+#include "base/macros.h"
+#include "ios/public/provider/chrome/browser/images/whats_new_icon.h"
+
+@class UIImage;
+
+// BrandedImageProvider vends images that contain embedder-specific branding.
+class BrandedImageProvider {
+ public:
+  BrandedImageProvider();
+  virtual ~BrandedImageProvider();
+
+  // Returns the 24pt x 24pt image to use for the "activity controls" item on
+  // the accounts list screen.
+  virtual UIImage* GetAccountsListActivityControlsImage();
+
+  // Returns the 24pt x 24pt image to use for the "account and activity" item on
+  // the clear browsing data settings screen.
+  virtual UIImage* GetClearBrowsingDataAccountActivityImage();
+
+  // Returns the 24pt x 24pt image to use for the "account and activity" item on
+  // the clear browsing data settings screen.
+  virtual UIImage* GetClearBrowsingDataSiteDataImage();
+
+  // Returns the 24pt x 24pt image to use in the contextual search header.
+  virtual UIImage* GetContextualSearchHeaderImage();
+
+  // Returns the 16pt x 16pt image to use for the "sync settings" item on the
+  // signin confirmation screen.
+  virtual UIImage* GetSigninConfirmationSyncSettingsImage();
+
+  // Returns the 16pt x 16pt image to use for the "personalize services" item on
+  // the signin confirmation screen.
+  virtual UIImage* GetSigninConfirmationPersonalizeServicesImage();
+
+  // Sets |image_id| to contain the resource id corresponding to the 24pt x 24pt
+  // image for the toolbar voice search button.  If this method returns false,
+  // |image_id| is invalid and callers should fall back to a default image.  The
+  // returned image should be used for all toolbar styles and all button states.
+  virtual bool GetToolbarVoiceSearchButtonImageId(int* image_id);
+
+  // Returns the 24pt x 24pt image corresponding to the given icon |type|.
+  virtual UIImage* GetWhatsNewIconImage(WhatsNewIcon type);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BrandedImageProvider);
+};
+
+#endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_IMAGES_BRANDED_IMAGE_PROVIDER_H_