Create headerHeightForTab in TabHeadersDelegate.

ios/chrome/browser/ui/fullscreen_controller.mm

 // Copyright 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 "ios/chrome/browser/ui/fullscreen_controller.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "base/mac/objc_property_releaser.h"
@@ skipping 308 matching lines @@
 - (void)dealloc {
   [[NSNotificationCenter defaultCenter] removeObserver:self];
   [super dealloc];
 }
 
 - (CRWWebViewScrollViewProxy*)scrollViewProxy {
   return [webViewProxy_ scrollViewProxy];
 }
 
 - (CGFloat)headerHeight {
-  return [self.delegate headerHeight];
+  return [self.delegate headerHeightForCurrentTab];
 }
 
 - (CGFloat)topContentInsetCausedByHeader {
   if ([webViewProxy_ shouldUseInsetForTopPadding]) {
     // If the web view's |shouldUseInsetForTopPadding| is YES, fullscreen
     // header insets the content by modifying content inset.
     return self.headerHeight;
   }
   return 0.0f;
 }
@@ skipping 479 matching lines @@
   overscrollActionsInProgress_ = NO;
 }
 
 #pragma mark - Used for testing
 
 + (void)setEnabledForTests:(BOOL)enabled {
   gEnabledForTests = enabled;
 }
 
 @end