[ObjC ARC] Converts ios/web:web to ARC.

ios/web/BUILD.gn

Index: ios/web/BUILD.gn
diff --git a/ios/web/BUILD.gn b/ios/web/BUILD.gn
index f68865d54fcf46b375e88d69573b81e813cee812..5f1be78619f5cceb864fd82561b8aef19e29ced2 100644
--- a/ios/web/BUILD.gn
+++ b/ios/web/BUILD.gn
@@ -219,11 +219,26 @@ source_set("web_arc") {
     "web_state/ui/crw_swipe_recognizer_provider.h",
     "web_state/ui/crw_touch_tracking_recognizer.h",
     "web_state/ui/crw_touch_tracking_recognizer.mm",
+    "web_state/ui/crw_web_controller_container_view.h",
+    "web_state/ui/crw_web_controller_container_view.mm",
+    "web_state/ui/crw_web_view_content_view.mm",
     "web_state/ui/crw_web_view_proxy_impl.h",
     "web_state/ui/crw_web_view_proxy_impl.mm",
     "web_state/ui/crw_web_view_scroll_view_proxy.mm",
     "web_state/ui/crw_wk_navigation_states.h",
     "web_state/ui/crw_wk_navigation_states.mm",
+    "web_state/ui/crw_wk_script_message_router.h",
+    "web_state/ui/crw_wk_script_message_router.mm",
+    "web_state/ui/web_view_js_utils.h",
+    "web_state/ui/web_view_js_utils.mm",
+    "web_state/ui/wk_web_view_configuration_provider.h",
+    "web_state/ui/wk_web_view_configuration_provider.mm",
+    "web_state/web_state_impl.h",
+    "web_state/web_state_impl.mm",
+    "web_state/web_view_internal_creation_util.h",
+    "web_state/web_view_internal_creation_util.mm",
+    "web_state/wk_web_view_security_util.h",
+    "web_state/wk_web_view_security_util.mm",
     "web_thread_impl.cc",
     "web_thread_impl.h",
     "web_view_creation_util.mm",
@@ -288,33 +303,18 @@ source_set("web") {
   sources = [
     "web_state/ui/crw_web_controller.h",
     "web_state/ui/crw_web_controller.mm",
-    "web_state/ui/crw_web_controller_container_view.h",
-    "web_state/ui/crw_web_controller_container_view.mm",
-    "web_state/ui/crw_web_view_content_view.mm",
-    "web_state/ui/crw_wk_script_message_router.h",
-    "web_state/ui/crw_wk_script_message_router.mm",
-    "web_state/ui/web_view_js_utils.h",
-    "web_state/ui/web_view_js_utils.mm",
     "web_state/ui/wk_back_forward_list_item_holder.h",
     "web_state/ui/wk_back_forward_list_item_holder.mm",
-    "web_state/ui/wk_web_view_configuration_provider.h",
-    "web_state/ui/wk_web_view_configuration_provider.mm",
     "web_state/web_controller_observer_bridge.h",
     "web_state/web_controller_observer_bridge.mm",
     "web_state/web_state.mm",
     "web_state/web_state_delegate.mm",
     "web_state/web_state_delegate_bridge.mm",
-    "web_state/web_state_impl.h",
-    "web_state/web_state_impl.mm",
     "web_state/web_state_observer.mm",
     "web_state/web_state_observer_bridge.mm",
     "web_state/web_state_policy_decider.mm",
     "web_state/web_state_weak_ptr_factory.h",
     "web_state/web_state_weak_ptr_factory.mm",
-    "web_state/web_view_internal_creation_util.h",
-    "web_state/web_view_internal_creation_util.mm",
-    "web_state/wk_web_view_security_util.h",
-    "web_state/wk_web_view_security_util.mm",
   ]
 
   libs = [