diff --git a/ios/chrome/browser/prerender/preload_controller.mm b/ios/chrome/browser/prerender/preload_controller.mm
index 716c5e20e9358c..30b376f8df3346 100644
--- a/ios/chrome/browser/prerender/preload_controller.mm
+++ b/ios/chrome/browser/prerender/preload_controller.mm
@@ -20,6 +20,7 @@
 #import "ios/chrome/browser/tabs/tab_helper_util.h"
 #import "ios/chrome/browser/tabs/tab_private.h"
 #include "ios/chrome/browser/ui/prerender_final_status.h"
+#import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/web_state/ui/crw_native_content.h"
 #include "ios/web/public/web_thread.h"
 #import "ios/web/web_state/ui/crw_web_controller.h"
diff --git a/ios/chrome/browser/tabs/tab.mm b/ios/chrome/browser/tabs/tab.mm
index 2686d8e8a27d09..51714b53f0e23e 100644
--- a/ios/chrome/browser/tabs/tab.mm
+++ b/ios/chrome/browser/tabs/tab.mm
@@ -864,11 +864,9 @@ - (void)commitCachedEntriesToHistoryDB {
   _addPageVector.clear();
 }
 
-- (void)webDidUpdateSessionForLoadWithParams:
-            (const web::NavigationManager::WebLoadParams&)params
-                        wasInitialNavigation:(BOOL)initialNavigation {
+- (void)webDidUpdateSessionForLoadWithURL:(const GURL&)URL {
   // After a crash the NTP is loaded by default.
-  if (params.url.host() != kChromeUINewTabHost) {
+  if (URL.host() != kChromeUINewTabHost) {
     static BOOL hasLoadedPage = NO;
     if (!hasLoadedPage) {
       // As soon as load is initialted, a crash shouldn't be counted as a
@@ -880,15 +878,6 @@ - (void)webDidUpdateSessionForLoadWithParams:
     }
   }
 
-  ui::PageTransition transition = params.transition_type;
-
-  // Record any explicit, non-redirect navigation as a clobber (as long as it's
-  // in a real tab).
-  if (!initialNavigation && !_isPrerenderTab &&
-      !PageTransitionCoreTypeIs(transition, ui::PAGE_TRANSITION_RELOAD) &&
-      (transition & ui::PAGE_TRANSITION_IS_REDIRECT_MASK) == 0) {
-    base::RecordAction(base::UserMetricsAction("MobileTabClobbered"));
-  }
   if ([_parentTabModel tabUsageRecorder])
     [_parentTabModel tabUsageRecorder]->RecordPageLoadStart(self.webState);
 
@@ -1277,16 +1266,13 @@ - (void)webWillAddPendingURL:(const GURL&)url
 
   BOOL isUserNavigationEvent =
       (transition & ui::PAGE_TRANSITION_IS_REDIRECT_MASK) == 0;
-  // Check for link-follow clobbers. These are changes where there is no
+  // Record start of page load when a user taps a link. A user initiated link
+  // tap is indicated when the page transition is not a redirect, there is no
   // pending entry (since that means the change wasn't caused by this class),
-  // and where the URL changes (to avoid counting page resurrection).
-  // TODO(crbug.com/546401): Consider moving this into NavigationManager, or
-  // into a NavigationManager observer callback, so it doesn't need to be
-  // checked in several places.
+  // and when the URL changes (to avoid counting page resurrection).
   if (isUserNavigationEvent && !_isPrerenderTab &&
       ![self navigationManager]->GetPendingItem() &&
       url != self.lastCommittedURL) {
-    base::RecordAction(base::UserMetricsAction("MobileTabClobbered"));
     if ([_parentTabModel tabUsageRecorder])
       [_parentTabModel tabUsageRecorder]->RecordPageLoadStart(self.webState);
   }
diff --git a/ios/chrome/browser/ui/contextual_search/contextual_search_results_view.mm b/ios/chrome/browser/ui/contextual_search/contextual_search_results_view.mm
index 4337c93ea5cc57..78acad760469c3 100644
--- a/ios/chrome/browser/ui/contextual_search/contextual_search_results_view.mm
+++ b/ios/chrome/browser/ui/contextual_search/contextual_search_results_view.mm
@@ -20,6 +20,7 @@
 #import "ios/chrome/browser/web_state_list/web_state_opener.h"
 #import "ios/chrome/common/material_timing.h"
 #include "ios/web/public/load_committed_details.h"
+#import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/serializable_user_data_manager.h"
 #import "ios/web/public/web_state/ui/crw_native_content_provider.h"
 #import "ios/web/public/web_state/ui/crw_web_view_proxy.h"
diff --git a/ios/chrome/browser/ui/toolbar/toolbar_model_impl_ios.mm b/ios/chrome/browser/ui/toolbar/toolbar_model_impl_ios.mm
index 7f836adcff28bb..09073370045375 100644
--- a/ios/chrome/browser/ui/toolbar/toolbar_model_impl_ios.mm
+++ b/ios/chrome/browser/ui/toolbar/toolbar_model_impl_ios.mm
@@ -12,6 +12,7 @@
 #import "ios/chrome/browser/tabs/legacy_tab_helper.h"
 #include "ios/chrome/browser/tabs/tab.h"
 #include "ios/chrome/browser/ui/toolbar/toolbar_model_delegate_ios.h"
+#import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/web_state/web_state.h"
 #import "ios/web/web_state/ui/crw_web_controller.h"
 
diff --git a/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.h b/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.h
index bbdfad0f3b516f..a179629a374e0a 100644
--- a/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.h
+++ b/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.h
@@ -21,10 +21,6 @@ class WebStateListMetricsObserver : public WebStateListObserver {
                           web::WebState* web_state,
                           int index,
                           bool activating) override;
-  void WebStateReplacedAt(WebStateList* web_state_list,
-                          web::WebState* old_web_state,
-                          web::WebState* new_web_state,
-                          int index) override;
   void WebStateDetachedAt(WebStateList* web_state_list,
                           web::WebState* web_state,
                           int index) override;
diff --git a/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.mm b/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.mm
index d38c65b54dae6a..14e739a404b21f 100644
--- a/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.mm
+++ b/ios/chrome/browser/web_state_list/web_state_list_metrics_observer.mm
@@ -42,16 +42,6 @@
   ++inserted_web_state_counter_;
 }
 
-void WebStateListMetricsObserver::WebStateReplacedAt(
-    WebStateList* web_state_list,
-    web::WebState* old_web_state,
-    web::WebState* new_web_state,
-    int index) {
-  // Record a tab clobber, since swapping tabs bypasses the Tab code that would
-  // normally log clobbers.
-  base::RecordAction(base::UserMetricsAction("MobileTabClobbered"));
-}
-
 void WebStateListMetricsObserver::WebStateDetachedAt(
     WebStateList* web_state_list,
     web::WebState* web_state,
diff --git a/ios/web/navigation/navigation_manager_delegate.h b/ios/web/navigation/navigation_manager_delegate.h
index 20d5a1924e7bb4..3266aa34f41afe 100644
--- a/ios/web/navigation/navigation_manager_delegate.h
+++ b/ios/web/navigation/navigation_manager_delegate.h
@@ -7,9 +7,9 @@
 
 #include <stddef.h>
 
-#import "ios/web/public/navigation_manager.h"
 
 @protocol CRWWebViewNavigationProxy;
+class GURL;
 
 namespace web {
 
@@ -40,9 +40,7 @@ class NavigationManagerDelegate {
 
   // Instructs the delegate to notify its delegates that the current navigation
   // item will be loaded.
-  virtual void WillLoadCurrentItemWithParams(
-      const NavigationManager::WebLoadParams&,
-      bool is_initial_navigation) = 0;
+  virtual void WillLoadCurrentItemWithUrl(const GURL&) = 0;
 
   // Instructs the delegate to load the current navigation item.
   virtual void LoadCurrentItem() = 0;
diff --git a/ios/web/navigation/navigation_manager_impl.mm b/ios/web/navigation/navigation_manager_impl.mm
index b5e70dd253f06e..feaf7b391f2dfd 100644
--- a/ios/web/navigation/navigation_manager_impl.mm
+++ b/ios/web/navigation/navigation_manager_impl.mm
@@ -206,8 +206,6 @@
   delegate_->ClearTransientContent();
   delegate_->RecordPageStateInNavigationItem();
 
-  bool is_initial_navigation = !GetItemCount();
-
   NavigationInitiationType initiation_type =
       params.is_renderer_initiated
           ? NavigationInitiationType::RENDERER_INITIATED
@@ -249,7 +247,7 @@
     added_item->SetShouldSkipRepostFormConfirmation(true);
   }
 
-  delegate_->WillLoadCurrentItemWithParams(params, is_initial_navigation);
+  delegate_->WillLoadCurrentItemWithUrl(params.url);
   delegate_->LoadCurrentItem();
 }
 
diff --git a/ios/web/navigation/navigation_manager_impl_unittest.mm b/ios/web/navigation/navigation_manager_impl_unittest.mm
index f12af1043d9e7c..3f192643a645d1 100644
--- a/ios/web/navigation/navigation_manager_impl_unittest.mm
+++ b/ios/web/navigation/navigation_manager_impl_unittest.mm
@@ -73,8 +73,7 @@ void SetSessionController(CRWSessionController* session_controller) {
   MOCK_METHOD0(ClearTransientContent, void());
   MOCK_METHOD0(RecordPageStateInNavigationItem, void());
   MOCK_METHOD0(UpdateHtml5HistoryState, void());
-  MOCK_METHOD2(WillLoadCurrentItemWithParams,
-               void(const NavigationManager::WebLoadParams&, bool));
+  MOCK_METHOD1(WillLoadCurrentItemWithUrl, void(const GURL&));
   MOCK_METHOD0(WillChangeUserAgentType, void());
   MOCK_METHOD0(LoadCurrentItem, void());
   MOCK_METHOD0(LoadIfNecessary, void());
@@ -2137,8 +2136,7 @@ GURL rewritten_url4(
       .Times(1);
   EXPECT_CALL(navigation_manager_delegate(), ClearTransientContent()).Times(1);
   EXPECT_CALL(navigation_manager_delegate(),
-              WillLoadCurrentItemWithParams(::testing::Ref(params),
-                                            true /* is_initial_navigation */));
+              WillLoadCurrentItemWithUrl(::testing::Ref(params.url)));
   EXPECT_CALL(navigation_manager_delegate(), LoadCurrentItem()).Times(1);
 
   navigation_manager()->LoadURLWithParams(params);
@@ -2171,8 +2169,7 @@ GURL rewritten_url4(
       .Times(1);
   EXPECT_CALL(navigation_manager_delegate(), ClearTransientContent()).Times(1);
   EXPECT_CALL(navigation_manager_delegate(),
-              WillLoadCurrentItemWithParams(::testing::Ref(params),
-                                            false /* is_initial_navigation */));
+              WillLoadCurrentItemWithUrl(::testing::Ref(params.url)));
   EXPECT_CALL(navigation_manager_delegate(), LoadCurrentItem()).Times(1);
 
   navigation_manager()->LoadURLWithParams(params);
diff --git a/ios/web/public/web_state/ui/crw_web_delegate.h b/ios/web/public/web_state/ui/crw_web_delegate.h
index 482484eb0f5c12..75c890e12ce7d1 100644
--- a/ios/web/public/web_state/ui/crw_web_delegate.h
+++ b/ios/web/public/web_state/ui/crw_web_delegate.h
@@ -11,7 +11,6 @@
 
 #import "base/ios/block_types.h"
 #include "ios/web/public/favicon_url.h"
-#import "ios/web/public/navigation_manager.h"
 #include "ios/web/public/ssl_status.h"
 #import "ios/web/public/web_state/ui/crw_native_content.h"
 #import "ios/web/public/web_state/web_state.h"
@@ -51,9 +50,7 @@ class GURL;
 // less, then remove any delegate method that becomes unnecessary as a result.
 
 // Called when a page is loaded using loadWithParams.
-- (void)webDidUpdateSessionForLoadWithParams:
-            (const web::NavigationManager::WebLoadParams&)params
-                        wasInitialNavigation:(BOOL)initialNavigation;
+- (void)webDidUpdateSessionForLoadWithURL:(const GURL&)URL;
 
 @optional
 
diff --git a/ios/web/test/fakes/test_navigation_manager_delegate.h b/ios/web/test/fakes/test_navigation_manager_delegate.h
index 3707744670c8fd..f54350e0d9b724 100644
--- a/ios/web/test/fakes/test_navigation_manager_delegate.h
+++ b/ios/web/test/fakes/test_navigation_manager_delegate.h
@@ -7,6 +7,7 @@
 
 #import "ios/web/navigation/navigation_manager_delegate.h"
 
+class GURL;
 @protocol CRWWebViewNavigationProxy;
 
 namespace web {
@@ -16,8 +17,7 @@ class TestNavigationManagerDelegate : public NavigationManagerDelegate {
   void ClearTransientContent() override;
   void RecordPageStateInNavigationItem() override;
   void UpdateHtml5HistoryState() override;
-  void WillLoadCurrentItemWithParams(const NavigationManager::WebLoadParams&,
-                                     bool is_initial_navigation) override;
+  void WillLoadCurrentItemWithUrl(const GURL&) override;
   void WillChangeUserAgentType() override;
   void LoadCurrentItem() override;
   void LoadIfNecessary() override;
diff --git a/ios/web/test/fakes/test_navigation_manager_delegate.mm b/ios/web/test/fakes/test_navigation_manager_delegate.mm
index ce0d2b4643fff7..cc1fc182716521 100644
--- a/ios/web/test/fakes/test_navigation_manager_delegate.mm
+++ b/ios/web/test/fakes/test_navigation_manager_delegate.mm
@@ -4,6 +4,7 @@
 
 #import "ios/web/test/fakes/test_navigation_manager_delegate.h"
 #import "ios/web/web_state/ui/crw_web_view_navigation_proxy.h"
+#include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -14,9 +15,7 @@
 void TestNavigationManagerDelegate::ClearTransientContent() {}
 void TestNavigationManagerDelegate::RecordPageStateInNavigationItem() {}
 void TestNavigationManagerDelegate::UpdateHtml5HistoryState() {}
-void TestNavigationManagerDelegate::WillLoadCurrentItemWithParams(
-    const NavigationManager::WebLoadParams&,
-    bool is_initial_navigation) {}
+void TestNavigationManagerDelegate::WillLoadCurrentItemWithUrl(const GURL&) {}
 void TestNavigationManagerDelegate::WillChangeUserAgentType() {}
 void TestNavigationManagerDelegate::LoadCurrentItem() {}
 void TestNavigationManagerDelegate::LoadIfNecessary() {}
diff --git a/ios/web/web_state/ui/crw_web_controller.h b/ios/web/web_state/ui/crw_web_controller.h
index f0c0f032d8ae24..ae95ad3783b3e4 100644
--- a/ios/web/web_state/ui/crw_web_controller.h
+++ b/ios/web/web_state/ui/crw_web_controller.h
@@ -8,7 +8,6 @@
 #import <UIKit/UIKit.h>
 
 #import "ios/web/net/crw_request_tracker_delegate.h"
-#import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/web_state/js/crw_js_injection_evaluator.h"
 #import "ios/web/public/web_state/ui/crw_web_delegate.h"
 #include "ios/web/public/web_state/url_verification_constants.h"
@@ -155,13 +154,10 @@ class WebStateImpl;
 // to generate an overlay placeholder view.
 - (BOOL)canUseViewForGeneratingOverlayPlaceholderView;
 
-// Notifies delegate that |currentNavItem| will be loaded with |params|. If this
-// is the first navigation, |isInitialNavigation| is YES.
+// Notifies delegate that |currentNavItem| will be loaded with |url|.
 // TODO(crbug.com/674991): Remove this method when CRWWebDelegate is no longer
 // used.
-- (void)willLoadCurrentItemWithParams:
-            (const web::NavigationManager::WebLoadParams&)params
-                  isInitialNavigation:(BOOL)isInitialNavigation;
+- (void)willLoadCurrentItemWithURL:(const GURL&)URL;
 
 // Loads the URL indicated by current session state.
 - (void)loadCurrentURL;
diff --git a/ios/web/web_state/ui/crw_web_controller.mm b/ios/web/web_state/ui/crw_web_controller.mm
index 67e20a0de4bf81..5618c48d4e0016 100644
--- a/ios/web/web_state/ui/crw_web_controller.mm
+++ b/ios/web/web_state/ui/crw_web_controller.mm
@@ -1755,11 +1755,8 @@ - (void)loadCurrentURLInNativeView {
                 navigationContext:navigationContext.get()];
 }
 
-- (void)willLoadCurrentItemWithParams:
-            (const NavigationManager::WebLoadParams&)params
-                  isInitialNavigation:(BOOL)isInitialNavigation {
-  [_delegate webDidUpdateSessionForLoadWithParams:params
-                             wasInitialNavigation:isInitialNavigation];
+- (void)willLoadCurrentItemWithURL:(const GURL&)URL {
+  [_delegate webDidUpdateSessionForLoadWithURL:URL];
 }
 
 - (void)loadCurrentURL {
diff --git a/ios/web/web_state/web_state_impl.h b/ios/web/web_state/web_state_impl.h
index 57bf74a87f5770..319bca5fbf279f 100644
--- a/ios/web/web_state/web_state_impl.h
+++ b/ios/web/web_state/web_state_impl.h
@@ -264,8 +264,7 @@ class WebStateImpl : public WebState, public NavigationManagerDelegate {
   void RecordPageStateInNavigationItem() override;
   void UpdateHtml5HistoryState() override;
   void WillChangeUserAgentType() override;
-  void WillLoadCurrentItemWithParams(const NavigationManager::WebLoadParams&,
-                                     bool is_initial_navigation) override;
+  void WillLoadCurrentItemWithUrl(const GURL&) override;
   void LoadCurrentItem() override;
   void LoadIfNecessary() override;
   void Reload() override;
diff --git a/ios/web/web_state/web_state_impl.mm b/ios/web/web_state/web_state_impl.mm
index e9a3f4f2392cd7..bdcc4beecd975f 100644
--- a/ios/web/web_state/web_state_impl.mm
+++ b/ios/web/web_state/web_state_impl.mm
@@ -749,11 +749,8 @@
   [web_controller_ requirePageReconstruction];
 }
 
-void WebStateImpl::WillLoadCurrentItemWithParams(
-    const NavigationManager::WebLoadParams& params,
-    bool is_initial_navigation) {
-  [web_controller_ willLoadCurrentItemWithParams:params
-                             isInitialNavigation:is_initial_navigation];
+void WebStateImpl::WillLoadCurrentItemWithUrl(const GURL& url) {
+  [web_controller_ willLoadCurrentItemWithURL:url];
 }
 
 void WebStateImpl::LoadCurrentItem() {