Create headerHeightForTab in TabHeadersDelegate.

ios/chrome/browser/ui/side_swipe/side_swipe_controller.mm

 // Copyright 2015 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/side_swipe/side_swipe_controller.h"
 
 #include <memory>
 
 #include "components/reading_list/core/reading_list_switches.h"
 #import "components/reading_list/ios/reading_list_model.h"
@@ skipping 373 matching lines @@
     [[model_ currentTab] updateFullscreenWithToolbarVisible:YES];
 
     inSwipe_ = YES;
     [swipeDelegate_ updateAccessoryViewsForSideSwipeWithVisibility:NO];
     BOOL goBack = IsSwipingBack(gesture.direction);
 
     currentContentProvider_.reset([self contentProviderForGesture:goBack]);
     BOOL canNavigate = currentContentProvider_ != nil;
 
     CGRect gestureBounds = gesture.view.bounds;
-    CGFloat headerHeight = [swipeDelegate_ headerHeight];
+    CGFloat headerHeight = [swipeDelegate_ headerHeightForCurrentTab];
     CGRect navigationFrame =
         CGRectMake(CGRectGetMinX(gestureBounds),
                    CGRectGetMinY(gestureBounds) + headerHeight,
                    CGRectGetWidth(gestureBounds),
                    CGRectGetHeight(gestureBounds) - headerHeight);
 
     pageSideSwipeView_.reset([[SideSwipeNavigationView alloc]
         initWithFrame:navigationFrame
         withDirection:gesture.direction
           canNavigate:canNavigate
@@ skipping 129 matching lines @@
     didChangeActiveTab:(Tab*)newTab
            previousTab:(Tab*)previousTab
                atIndex:(NSUInteger)index {
   // Toggling the gesture's enabled state off and on will effectively cancel
   // the gesture recognizer.
   [swipeGestureRecognizer_ setEnabled:NO];
   [swipeGestureRecognizer_ setEnabled:YES];
 }
 
 @end