I won't turn it on for Chrome because it causes an issue that it sometimes falls back to Chrome's navigation gesture unexpectedly per danyao@.
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823 commit 97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823 Author: Hiroshi Ichikawa <ichikawa@chromium.org> Date: Thu Oct 11 03:21:21 2018 Add CWVWebView.allowsBackForwardNavigationGestures. BUG= 892494 Cq-Include-Trybots: luci.chromium.try:ios-simulator-cronet;luci.chromium.try:ios-simulator-full-configs Change-Id: Ib7ba403e88321b645f9e0deaf6a33d2d964c6cce Reviewed-on: https://chromium-review.googlesource.com/c/1010042 Commit-Queue: Hiroshi Ichikawa <ichikawa@chromium.org> Reviewed-by: Eugene But <eugenebut@chromium.org> Cr-Commit-Position: refs/heads/master@{#598652} [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web/public/web_state/ui/crw_web_view_proxy.h [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web/web_state/ui/crw_web_controller.h [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web/web_state/ui/crw_web_controller.mm [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web/web_state/ui/crw_web_controller_unittest.mm [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web/web_state/ui/crw_web_view_proxy_impl.mm [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web/web_state/ui/crw_web_view_proxy_impl_unittest.mm [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web_view/internal/cwv_web_view.mm [modify] https://crrev.com/97f4bd65a69a2e1cc9bfde2ed8a298e2812f2823/ios/web_view/public/cwv_web_view.h
Comment 1 by ichikawa@chromium.org
, Oct 5