[ios] Adds ChromiumBrowserProvider.

ios/chrome/browser/providers/chromium_logo_controller.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/providers/chromium_logo_controller.h"
+
+#import <UIKit/UIKit.h>
+
+#include "base/mac/scoped_nsobject.h"
+
+@implementation ChromiumLogoController {
+  base::scoped_nsobject<UIView> _view;
+}
+
+@synthesize showingLogo = _showingLogo;
+
+- (instancetype)init {
+  if ((self = [super init])) {

[sdefresne, 2016/11/02 16:27:41]

Since this is new code, can you convert this file to ARC? It will make the file
simpler (you can @synthesize the view property too).

[rohitrao (ping after 24h), 2016/11/02 19:10:44]

Done.

+    _view.reset([[UIView alloc] init]);
+  }
+  return self;
+}
+
+- (UIView*)view {
+  return _view;
+}
+
+- (void)fetchDoodle {
+  // Do nothing.
+}
+
+- (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
+  return nil;
+}
+
+@end