leaveInteractionSuppressedMode_() {
    if (this.interactionSuppressed_) {
      goog.array.forEach(
          ui.WebsiteContainer.capturedEventTypes, function(type) {
            goog.dom.getElement('webview').removeEventListener(
                type, this.boundFocusStealer_, true);
          }, this);
      goog.dom.classlist.add(
          goog.dom.getElement('webview-container'), 'typing-allowed');
    }
    this.interactionSuppressed_ = false;
    this.displayError_('interactionEnabled');
  }
Allows for full interaction with the web application in a webview.
@private