Removed dead code from NavigationManagerImpl::GetIndexForOffset.

ios/web/navigation/navigation_manager_impl_unittest.mm

 // Copyright 2014 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/web/navigation/navigation_manager_impl.h"
 
 #include "base/logging.h"
 #import "base/mac/scoped_nsobject.h"
 #import "ios/web/navigation/crw_session_controller+private_constructors.h"
 #import "ios/web/navigation/navigation_manager_delegate.h"
@@ skipping 151 matching lines @@
 
   [session_controller() goToItemAtIndex:0];
   EXPECT_FALSE(navigation_manager()->CanGoBack());
   EXPECT_FALSE(navigation_manager()->CanGoToOffset(-1));
 
   [session_controller() goToItemAtIndex:1];
   EXPECT_TRUE(navigation_manager()->CanGoBack());
   EXPECT_TRUE(navigation_manager()->CanGoToOffset(-1));
 }
 
-// Tests that going forward or positive offset is not possible if there is a
-// pending entry.
-TEST_F(NavigationManagerTest, CanGoForwardWithPendingItem) {
-  navigation_manager()->AddPendingItem(
-      GURL("http://www.url.com"), Referrer(), ui::PAGE_TRANSITION_TYPED,
-      web::NavigationInitiationType::USER_INITIATED);
-  [session_controller() commitPendingItem];
-  navigation_manager()->AddPendingItem(
-      GURL("http://www.url.com/0"), Referrer(), ui::PAGE_TRANSITION_TYPED,
-      web::NavigationInitiationType::USER_INITIATED);
-  [session_controller() commitPendingItem];
-  [session_controller() goToItemAtIndex:0];
-  navigation_manager()->AddPendingItem(
-      GURL("http://www.url.com/1"), Referrer(), ui::PAGE_TRANSITION_TYPED,
-      web::NavigationInitiationType::USER_INITIATED);
-
-  // Pending entry should not allow going forward.
-  EXPECT_FALSE(navigation_manager()->CanGoForward());
-  EXPECT_FALSE(navigation_manager()->CanGoToOffset(1));
-}
-
 // Tests that going forward or positive offset is not possible without a
 // committed item.
 TEST_F(NavigationManagerTest, CanGoForwardWithoutCommitedItem) {
   EXPECT_FALSE(navigation_manager()->CanGoForward());
   EXPECT_FALSE(navigation_manager()->CanGoToOffset(1));
 }
 
 // Tests that going forward or positive offset is not possible if there is ony
 // one committed item and no transient item.
 TEST_F(NavigationManagerTest, CanGoForwardWithSingleCommitedItem) {
@@ skipping 405 matching lines @@
 
   GURL url_before_reload = navigation_manager()->GetVisibleItem()->GetURL();
   navigation_manager()->Reload(web::ReloadType::NORMAL,
                                false /* check_for_repost */);
 
   EXPECT_EQ(url_before_reload,
             navigation_manager()->GetVisibleItem()->GetURL());
 }
 
 }  // namespace web