ios: Disable making the webState first responder on iOS14.

This is currently causing a number of EG2 tests to spin.  Temporarily
disable while we investigate.

Bug: 1103822
Change-Id: I5b1bffe2b679b2970566e6d2687c37aca63d2670
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2295746
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#787907}

ios/chrome/browser/ui/browser_view/browser_view_controller.mm

@@ -10,6 +10,7 @@
 #import <MaterialComponents/MaterialSnackbar.h>
 
 #include "base/base64.h"
+#include "base/ios/ios_util.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/foundation_util.h"
 #include "base/metrics/histogram_macros.h"
@@ -3400,15 +3401,19 @@ NSString* const kBrowserViewControllerSnackbarCategory =
 
   // If there is no first responder, try to make the webview or the NTP first
   // responder to have it answer keyboard commands (e.g. space bar to scroll).
-  if (!GetFirstResponder() && self.currentWebState) {
-    NewTabPageTabHelper* NTPHelper =
-        NewTabPageTabHelper::FromWebState(webState);
-    if (NTPHelper && NTPHelper->IsActive()) {
-      UIViewController* viewController =
-          _ntpCoordinatorsForWebStates[webState].viewController;
-      [viewController becomeFirstResponder];
-    } else {
-      [self.currentWebState->GetWebViewProxy() becomeFirstResponder];
+  // TODO(crbug.com/1103822): Investigate why this is causing EG2 tests to spin
+  // on iOS14.
+  if (!base::ios::IsRunningOnIOS14OrLater()) {
+    if (!GetFirstResponder() && self.currentWebState) {
+      NewTabPageTabHelper* NTPHelper =
+          NewTabPageTabHelper::FromWebState(webState);
+      if (NTPHelper && NTPHelper->IsActive()) {
+        UIViewController* viewController =
+            _ntpCoordinatorsForWebStates[webState].viewController;
+        [viewController becomeFirstResponder];
+      } else {
+        [self.currentWebState->GetWebViewProxy() becomeFirstResponder];
+      }
     }
   }
 }