[Paint Preview] Disable startup experiment when a11y is enabled

Bug: 1103314
Change-Id: I6361a0467afa0ce907c862b174943389090dd06a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2288098Reviewed-by: Calder Kitagawa <ckitagawa@chromium.org>
Commit-Queue: Mehran Mahmoudi <mahmoudi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#786410}

chrome/android/java/src/org/chromium/chrome/browser/paint_preview/PaintPreviewHelper.java

@@ -12,6 +12,7 @@ import org.chromium.chrome.browser.paint_preview.services.PaintPreviewTabService
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.EmptyTabModelSelectorObserver;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
+import org.chromium.chrome.browser.util.ChromeAccessibilityUtil;
 
 /**
  * Handles initialization of the Paint Preview tab observers.
@@ -62,7 +63,8 @@ public class PaintPreviewHelper {
     public static boolean showPaintPreviewOnRestore(
             Tab tab, Runnable onShown, Runnable onDismissed) {
         if (!CachedFeatureFlags.isEnabled(ChromeFeatureList.PAINT_PREVIEW_SHOW_ON_STARTUP)
-                || sHasAttemptedToShowOnRestore) {
+                || sHasAttemptedToShowOnRestore
+                || ChromeAccessibilityUtil.get().isAccessibilityEnabled()) {
             return false;
         }