VR: Don't stay in VR when exiting webVR if the activity doesn't support VR browsing.

chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
index 542ed6c78ab2793969a804f1b6512283bd0c0581..2b66c689fd2984029643296a30db7580e5cdbc95 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
@@ -587,7 +587,7 @@ public class VrShellDelegate implements ApplicationStatus.ActivityStateListener,
     private boolean exitWebVRPresent() {
         if (!mInVr) return false;
         mVrShell.setWebVrModeEnabled(false);
-        if (!isVrShellEnabled(mVrSupportLevel)) {
+        if (!isVrShellEnabled(mVrSupportLevel) || !activitySupportsVrBrowsing(mActivity)) {
             shutdownVr(false /* isPausing */, true /* showTransition */);
         }
         return true;