Update Clear Tab home tile in-product help string for accessibility

BUG=898529

Change-Id: Iff27d791065c04700d379cf3d60b1210ac24d477
Reviewed-on: https://chromium-review.googlesource.com/c/1298351Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602469}

chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageLayout.java

@@ -300,8 +300,8 @@ public class NewTabPageLayout extends LinearLayout implements TileGroup.Observer
         ViewRectProvider rectProvider = new ViewRectProvider(homepageView);
 
         TextBubble textBubble = new TextBubble(homepageView.getContext(), homepageView,
-                R.string.iph_homepage_tile_text, R.string.iph_homepage_tile_text, true,
-                rectProvider);
+                R.string.iph_homepage_tile_text, R.string.iph_homepage_tile_accessibility_text,
+                true, rectProvider);
         textBubble.setDismissOnTouchInteraction(true);
         textBubble.addOnDismissListener(
                 () -> tracker.dismissed(FeatureConstants.HOMEPAGE_TILE_FEATURE));

chrome/android/java/strings/android_chrome_strings.grd

@@ -3819,6 +3819,9 @@ However, you aren’t invisible. Going private doesn’t hide your browsing from
       <message name="IDS_IPH_HOMEPAGE_TILE_TEXT" desc="The in-product-help message to use first tile in Most Visited as homepage tile.">
         Your favorite pages are here
       </message>
+      <message name="IDS_IPH_HOMEPAGE_TILE_ACCESSIBILITY_TEXT" desc="The in-product-help message to use first tile in Most Visited as homepage tile when accessibility mode is enabled.">
+        Links to your favorite websites can be found on this page
+      </message>
 
       <!-- Password Accessory Strings -->
       <message name="IDS_KEYBOARD_ACCESSORY_SHEET_HIDE" desc="Description for the active icon button that closes an accessory sheet and brings back the keyboard.">

chrome/android/java/strings/android_chrome_strings_grd/IDS_IPH_HOMEPAGE_TILE_ACCESSIBILITY_TEXT.png.sha1

+d26fe19e7cad4320d01f7078092a81fbc570ca89
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