Removes the IsReadingListEnabled flags

ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm

 // Copyright 2012 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/ui/toolbar/web_toolbar_controller.h"
 
 #import <CoreLocation/CoreLocation.h>
 #include <QuartzCore/QuartzCore.h>
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/foundation_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/user_metrics.h"
 #include "base/metrics/user_metrics_action.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/google/core/browser/google_util.h"
 #include "components/omnibox/browser/omnibox_edit_model.h"
-#include "components/reading_list/core/reading_list_switches.h"
 #include "components/search_engines/util.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/toolbar/toolbar_model.h"
 #include "ios/chrome/browser/autocomplete/autocomplete_scheme_classifier_impl.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #include "ios/chrome/browser/reading_list/reading_list_model_factory.h"
 #include "ios/chrome/browser/search_engines/template_url_service_factory.h"
 #import "ios/chrome/browser/tabs/tab.h"
 #import "ios/chrome/browser/tabs/tab_model.h"
@@ skipping 342 matching lines @@
   DCHECK(browserState);
   _delegate = delegate;
   _urlLoader = urlLoader;
   _browserState = browserState;
   _incognito = browserState->IsOffTheRecord();
   self = [super initWithStyle:(_incognito ? ToolbarControllerStyleIncognitoMode
                                           : ToolbarControllerStyleLightMode)];
   if (!self)
     return nil;
 
-  if (reading_list::switches::IsReadingListEnabled()) {
-    self.readingListModel =
-        ReadingListModelFactory::GetForBrowserState(browserState);
-  }
+  self.readingListModel =
+      ReadingListModelFactory::GetForBrowserState(browserState);
 
   InterfaceIdiom idiom = IsIPadIdiom() ? IPAD_IDIOM : IPHONE_IDIOM;
   // Note that |_webToolbar| gets its frame set to -specificControlArea later in
   // this method.
   _webToolbar.reset([[UIView alloc]
       initWithFrame:LayoutRectGetRect(kWebToolbarFrame[idiom])]);
   UIColor* textColor =
       _incognito
           ? [UIColor whiteColor]
           : [UIColor colorWithWhite:0 alpha:[MDCTypography body1FontOpacity]];
@@ skipping 2169 matching lines @@
 
 - (BOOL)isPrerenderAnimationRunning {
   return _prerenderAnimating;
 }
 
 - (OmniboxTextFieldIOS*)omnibox {
   return _omniBox.get();
 }
 
 @end