Update notification settings to allow for multiprofile situations.

ui/message_center/cocoa/settings_controller.mm

 // Copyright (c) 2013 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 "ui/message_center/cocoa/settings_controller.h"
 
 #include "base/mac/foundation_util.h"
 #import "base/mac/scoped_nsobject.h"
 #include "base/stl_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 92 matching lines @@
 
 namespace message_center {
 
 NotifierSettingsObserverMac::~NotifierSettingsObserverMac() {}
 
 void NotifierSettingsObserverMac::UpdateIconImage(const NotifierId& notifier_id,
                                                   const gfx::Image& icon) {
   [settings_controller_ setIcon:icon.AsNSImage() forNotifierId:notifier_id];
 }
 
+void NotifierSettingsObserverMac::NotifierGroupChanged() {}
+
 }  // namespace message_center
 
 @implementation MCSettingsController
 
 - (id)initWithProvider:(message_center::NotifierSettingsProvider*)provider {
   if ((self = [super initWithNibName:nil bundle:nil])) {
     observer_.reset(new message_center::NotifierSettingsObserverMac(self));
     provider_ = provider;
     provider_->AddObserver(observer_.get());
   }
@@ skipping 174 matching lines @@
 
 - (NSButton*)buttonForNotifierAtIndex:(size_t)index {
   NSArray* subviews = [[scrollView_ documentView] subviews];
   // The checkboxes are in bottom-top order, the checkbox for notifiers_[0] is
   // last.
   NSView* view = [subviews objectAtIndex:notifiers_.size() - 1 - index];
   return base::mac::ObjCCastStrict<NSButton>(view);
 }
 
 @end