[ios] Removed alloc_with_zone_interceptor as unused.

ios/web/BUILD.gn

 # Copyright 2015 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/build/config.gni")
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 group("all_tests") {
@@ skipping 21 matching lines @@
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry:geometry",
     "//ui/resources",
     "//url",
   ]
 
   sources = [
     "active_state_manager_impl.h",
     "active_state_manager_impl.mm",
-    "alloc_with_zone_interceptor.h",
-    "alloc_with_zone_interceptor.mm",
     "browser_state.mm",
     "browser_url_rewriter_impl.h",
     "browser_url_rewriter_impl.mm",
     "interstitials/html_web_interstitial_impl.h",
     "interstitials/html_web_interstitial_impl.mm",
     "interstitials/native_web_interstitial_impl.h",
     "interstitials/native_web_interstitial_impl.mm",
     "interstitials/web_interstitial_facade_delegate.h",
     "interstitials/web_interstitial_impl.h",
     "interstitials/web_interstitial_impl.mm",
@@ skipping 444 matching lines @@
     "//net:test_support",
     "//services/service_manager/public/cpp",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base:test_support",
   ]
 
   sources = [
     "active_state_manager_impl_unittest.mm",
-    "alloc_with_zone_interceptor_unittest.mm",
     "browser_state_unittest.cc",
     "history_state_util_unittest.mm",
     "navigation/crw_session_controller_unittest.mm",
     "navigation/crw_session_entry_unittest.mm",
     "navigation/navigation_item_impl_unittest.mm",
     "navigation/navigation_manager_impl_unittest.mm",
     "navigation/nscoder_util_unittest.mm",
     "net/cert_host_pair_unittest.cc",
     "net/cert_policy_unittest.cc",
     "net/clients/crw_js_injection_network_client_unittest.mm",
@@ skipping 109 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }