Move FaviconAttributes to UI

ios/chrome/browser/favicon/favicon_attributes_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_FAVICON_FAVICON_ATTRIBUTES_PROVIDER_H_
-#define IOS_CHROME_BROWSER_FAVICON_FAVICON_ATTRIBUTES_PROVIDER_H_
-
-#import <UIKit/UIKit.h>
-#import "ios/chrome/browser/favicon/favicon_attributes.h"
-
-namespace favicon {
-class LargeIconService;
-}  // namespace favicon
-
-@class FaviconViewProvider;
-class GURL;
-
-// Object to fetch favicon attributes by URL - an image or a fallback icon if
-// there is no favicon image available with large enough resolution.
-@interface FaviconAttributesProvider : NSObject
-// Favicon attributes associated with |URL| will be fetched using
-// |largeIconService|. The favicon will be rendered with height and width equal
-// to |faviconSize|, and the image will be fetched if the source size is greater
-// than or equal to |minFaviconSize|.
-- (instancetype)initWithFaviconSize:(CGFloat)faviconSize
-                     minFaviconSize:(CGFloat)minFaviconSize
-                   largeIconService:(favicon::LargeIconService*)largeIconService
-    NS_DESIGNATED_INITIALIZER;
-- (instancetype)init NS_UNAVAILABLE;
-
-// Fetches favicon attributes and calls the completion block.
-- (void)fetchFaviconAttributesForURL:(const GURL&)URL
-                          completion:(void (^)(FaviconAttributes*))completion;
-
-// LargeIconService used to fetch favicons.
-@property(nonatomic, readonly) favicon::LargeIconService* largeIconService;
-// Minimal acceptable favicon size. Below that, will fall back to a monogram.
-@property(nonatomic, readonly) CGFloat minSize;
-// Expected favicon size (in points). Will downscale favicon to this.
-@property(nonatomic, readonly) CGFloat faviconSize;
-
-@end
-
-#endif  // IOS_CHROME_BROWSER_FAVICON_FAVICON_ATTRIBUTES_PROVIDER_H_