Creates FaviconAttributesProvider.

ios/chrome/browser/favicon/favicon_attributes.mm

Index: ios/chrome/browser/favicon/favicon_attributes.mm
diff --git a/ios/chrome/browser/favicon/favicon_attributes.mm b/ios/chrome/browser/favicon/favicon_attributes.mm
new file mode 100644
index 0000000000000000000000000000000000000000..b843163263dfaf1adb801c401f074255be636f42
--- /dev/null
+++ b/ios/chrome/browser/favicon/favicon_attributes.mm
@@ -0,0 +1,67 @@
+// 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"
+
+@implementation 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) {
+    _faviconImage = [image retain];
+    _monogramString = [monogram copy];
+    _textColor = [textColor retain];
+    _backgroundColor = [backgroundColor retain];
+  }
+
+  return self;
+}
+
+- (instancetype)initWithImage:(UIImage* _Nonnull)image {
+  DCHECK(image);
+  return
+      [self initWithImage:image monogram:nil textColor:nil backgroundColor:nil];
+}
+
+- (instancetype)initWithMonogram:(NSString* _Nonnull)monogram
+                       textColor:(UIColor* _Nonnull)textColor
+                 backgroundColor:(UIColor* _Nonnull)backgroundColor {
+  DCHECK(monogram && textColor && backgroundColor);
+  return [self initWithImage:nil
+                    monogram:monogram
+                   textColor:textColor
+             backgroundColor:backgroundColor];
+}
+
++ (instancetype)attributesWithImage:(UIImage* _Nonnull)image {
+  return [[[self alloc] initWithImage:image] autorelease];
+}
+
++ (instancetype)attributesWithMonogram:(NSString* _Nonnull)monogram
+                             textColor:(UIColor* _Nonnull)textColor
+                       backgroundColor:(UIColor* _Nonnull)backgroundColor {
+  return [[[self alloc] initWithMonogram:monogram
+                               textColor:textColor
+                         backgroundColor:backgroundColor] autorelease];
+}
+
+- (void)dealloc {
+  [_faviconImage release];

[jif, 2016/09/26 10:58:13]

We are supposed to use an ObjCPropertyReleaser

[stkhapugin, 2016/09/26 15:51:36]

Done.

+  [_monogramString release];
+  [_textColor release];
+  [_backgroundColor release];
+  [super dealloc];
+}
+
+@end