Creates FaviconAttributesProvider.

ios/chrome/browser/favicon/favicon_attributes.mm

+// 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.
+
+#import "ios/chrome/browser/favicon/favicon_attributes.h"
+
+#include "base/logging.h"
+#include "base/mac/objc_property_releaser.h"
+
+@implementation FaviconAttributes {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_FaviconAttributes;
+}
+@synthesize faviconImage = _faviconImage;
+@synthesize monogramString = _monogramString;
+@synthesize textColor = _textColor;
+@synthesize backgroundColor = _backgroundColor;
+
+- (instancetype)initWithImage:(UIImage*)image
+                     monogram:(NSString*)monogram
+                    textColor:(UIColor*)textColor
+              backgroundColor:(UIColor*)backgroundColor {
+  DCHECK(image || (monogram && textColor && backgroundColor));
+  self = [super init];
+  if (self) {
+    _propertyReleaser_FaviconAttributes.Init(self, [FaviconAttributes class]);
+    _faviconImage = [image retain];
+    _monogramString = [monogram copy];
+    _textColor = [textColor retain];
+    _backgroundColor = [backgroundColor retain];
+  }
+
+  return self;
+}
+
+- (instancetype)initWithImage:(UIImage*)image {
+  DCHECK(image);
+  return
+      [self initWithImage:image monogram:nil textColor:nil backgroundColor:nil];
+}
+
+- (instancetype)initWithMonogram:(NSString*)monogram
+                       textColor:(UIColor*)textColor
+                 backgroundColor:(UIColor*)backgroundColor {
+  DCHECK(monogram && textColor && backgroundColor);
+  return [self initWithImage:nil
+                    monogram:monogram
+                   textColor:textColor
+             backgroundColor:backgroundColor];
+}
+
++ (instancetype)attributesWithImage:(UIImage*)image {
+  return [[[self alloc] initWithImage:image] autorelease];
+}
+
++ (instancetype)attributesWithMonogram:(NSString*)monogram
+                             textColor:(UIColor*)textColor
+                       backgroundColor:(UIColor*)backgroundColor {
+  return [[[self alloc] initWithMonogram:monogram
+                               textColor:textColor
+                         backgroundColor:backgroundColor] autorelease];
+}
+
+@end