[RSearches] Check if mControlView is null

Bug:1330101

(cherry picked from commit cf05c0c)

Change-Id: If97e3b7804f6970a9f2a807ba0b6a7f46728af2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3680280
Reviewed-by: Donn Denman <donnd@chromium.org>
Commit-Queue: Gang Wu <gangwu@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1009162}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3687221
Auto-Submit: Gang Wu <gangwu@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Donn Denman <donnd@chromium.org>
Cr-Commit-Position: refs/branch-heads/5060@{#495}
Cr-Branched-From: b83393d-refs/heads/main@{#1002911}

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/RelatedSearchesControl.java

@@ -520,6 +520,8 @@ public void updateChips() {
     }
 
     private void handleChipTapped(PropertyModel tappedChip) {
+        if (mControlView == null) return;
+
         onSuggestionClicked(tappedChip.get(ChipProperties.ID));
         if (mSelectedChip != NO_SELECTED_CHIP) {
             mChips.get(mSelectedChip).model.set(ChipProperties.SELECTED, false);