Removed -[CRWWebDelegate webWillReload] callback.

ios/chrome/browser/tabs/tab.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/tabs/tab.h"
 
 #import <CoreLocation/CoreLocation.h>
 #import <UIKit/UIKit.h>
 
 #include <utility>
@@ skipping 967 matching lines @@
       addLocationToNavigationItem:navigationItem
                      browserState:_browserState];
 }
 
 - (void)loadSessionTab:(const sessions::SessionTab*)sessionTab {
   DCHECK(sessionTab);
   [self replaceHistoryWithNavigations:sessionTab->navigations
                          currentIndex:sessionTab->current_navigation_index];
 }
 
-- (void)webWillReload {
-  if ([_parentTabModel tabUsageRecorder])
-    [_parentTabModel tabUsageRecorder]->RecordReload(self);
-}
-
 // Halt the tab, which amounts to halting its webController.
 - (void)terminateNetworkActivity {
   [self.webController terminateNetworkActivity];
 }
 
 - (void)webStateDestroyed:(web::WebState*)webState {
   DCHECK_EQ(_webStateImpl, webState);
   self.fullScreenControllerDelegate = nil;
   self.overscrollActionsControllerDelegate = nil;
   self.passKitDialogProvider = nil;
@@ skipping 398 matching lines @@
       [_parentTabModel tabUsageRecorder]->RecordPageLoadStart(self);
   }
   if (![self navigationManager]->GetPendingItem()) {
     // Reset |isVoiceSearchResultsTab| since a new page is being navigated to.
     self.isVoiceSearchResultsTab = NO;
   }
 }
 
 - (void)webState:(web::WebState*)webState
     didStartNavigation:(web::NavigationContext*)navigation {
+  if ([_parentTabModel tabUsageRecorder] &&
+      PageTransitionCoreTypeIs(navigation->GetPageTransition(),
+                               ui::PAGE_TRANSITION_RELOAD)) {
+    [_parentTabModel tabUsageRecorder]->RecordReload(self);
+  }
+
   [self.dialogDelegate cancelDialogForTab:self];
   [_parentTabModel notifyTabChanged:self];
   [_openInController disable];
   [[NSNotificationCenter defaultCenter]
       postNotificationName:
           kTabClosingCurrentDocumentNotificationForCrashReporting
                     object:self];
 }
 
 - (void)webState:(web::WebState*)webState
@@ skipping 480 matching lines @@
 
 - (TabModel*)parentTabModel {
   return _parentTabModel;
 }
 
 - (FormInputAccessoryViewController*)inputAccessoryViewController {
   return _inputAccessoryViewController;
 }
 
 @end