Open normal tab on resume session.

When resuming session, open a normal tab even if the previous active
browser was incognito.

Bug: 1095592
Change-Id: I77cf1939cc210b081deff8dd5cb8f987191200b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2252804
Commit-Queue: Mark Cogan <marq@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780323}

ios/chrome/browser/ui/main/scene_controller.mm

@@ -378,12 +378,11 @@ const char kMultiWindowOpenInNewWindowHistogram[] =
         [self shouldOpenNTPTabOnActivationOfBrowser:self.currentInterface
                                                         .browser]) {
       DCHECK(!self.dismissingTabSwitcher);
-      [self beginDismissingTabSwitcherWithCurrentBrowser:self.currentInterface
+      [self beginDismissingTabSwitcherWithCurrentBrowser:self.mainInterface
                                                              .browser
                                             focusOmnibox:NO];
 
-      OpenNewTabCommand* command = [OpenNewTabCommand
-          commandWithIncognito:self.currentInterface.incognito];
+      OpenNewTabCommand* command = [OpenNewTabCommand commandWithIncognito:NO];
       command.userInitiated = NO;
       Browser* browser = self.currentInterface.browser;
       id<ApplicationCommands> applicationHandler = HandlerForProtocol(