[ios] Remove IDC_BACK and IDC_FORWARD

ios/chrome/browser/ui/toolbar/web_toolbar_controller_unittest.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/ui/toolbar/web_toolbar_controller.h"
 
 #import <Foundation/Foundation.h>
 
 #include <map>
 #include <memory>
@@ skipping 59 matching lines @@
     [[[delegate stub] andReturnValue:OCMOCK_VALUE(model_for_mock)]
         toolbarModelIOS];
 
     id urlLoader = [OCMockObject niceMockForProtocol:@protocol(UrlLoader)];
 
     // Create the WebToolbarController using the test objects.
     web_toolbar_controller_ = [[WebToolbarController alloc]
         initWithDelegate:delegate
                urlLoader:urlLoader
             browserState:chrome_browser_state_.get()
-         preloadProvider:nil];
+         preloadProvider:nil
+              dispatcher:nil];
     [web_toolbar_controller_ setUnitTesting:YES];
   }
   void TearDown() override {
     web_toolbar_controller_ = nil;
     BlockCleanupTest::TearDown();
   }
 
   web::TestWebThreadBundle thread_bundle_;
   std::unique_ptr<TestChromeBrowserState> chrome_browser_state_;
   TestToolbarModel* toolbar_model_;  // weak. Owned by toolbar_model_ios_.
@@ skipping 125 matching lines @@
     CGRect initialRect = initialIt->second;
     CGRect layoutRect = postLayoutIt->second;
     EXPECT_EQ(initialRect.origin.x, layoutRect.origin.x);
     EXPECT_EQ(initialRect.origin.y, layoutRect.origin.y);
     EXPECT_EQ(initialRect.size.width, layoutRect.size.width);
     EXPECT_EQ(initialRect.size.height, layoutRect.size.height);
     initialIt++;
   }
 }
 }  // namespace