[vr] Deny permission requests in VR mode

chrome/browser/download/download_request_limiter.cc

Index: chrome/browser/download/download_request_limiter.cc
diff --git a/chrome/browser/download/download_request_limiter.cc b/chrome/browser/download/download_request_limiter.cc
index ce379f77174df39fe5521891d3b984b4b16b0154..8206c8182a72f9e001e5a5bb0ccb6688ed7fc304 100644
--- a/chrome/browser/download/download_request_limiter.cc
+++ b/chrome/browser/download/download_request_limiter.cc
@@ -25,11 +25,17 @@
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
+#include "device/vr/features/features.h"
 #include "url/gurl.h"
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/download/download_request_infobar_delegate_android.h"
-#endif
+
+#if BUILDFLAG(ENABLE_VR)
+#include "chrome/browser/android/vr_shell/vr_tab_helper.h"
+#endif  // BUILDFLAG(ENABLE_VR)
+
+#endif  // defined(OS_ANDROID)
 
 using content::BrowserThread;
 using content::NavigationController;
@@ -208,6 +214,13 @@ void DownloadRequestLimiter::TabDownloadState::PromptUserForDownload(
   if (is_showing_prompt())
     return;
 
+#if BUILDFLAG(ENABLE_VR) && defined(OS_ANDROID)
+  if (vr_shell::VrTabHelper::IsInVr(web_contents_)) {
+    Cancel();
+    return;
+  }
+#endif
+
   if (PermissionRequestManager::IsEnabled()) {
     PermissionRequestManager* permission_request_manager =
         PermissionRequestManager::FromWebContents(web_contents_);