The way text input is handled in the iOS port makes it so that by the time WebEditorClient::textDidChangeInTextField is called, UserTypingGestureIndicator::processingUserTypingGesture() is already returning false. For this reason, the WebKit1 implementation of this client function disables the user-gesture check when targeting iOS. We should fix handling of typing on iOS so that the client function can distinguish between programmatic changes and user-typing-initiated changes.