[omnibox] Fix cursor position in RTL UI

We had a complicated test to see where to put the cursor, but it turns
out that it was unnecessary, and wrong in one case. This CL restores
its behavior.

Bug: 1019631
Change-Id: I18ed14d12dc55b3ac63c76eb4ed62e3f5624e8df
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1889999
Commit-Queue: Kevin Bailey <krb@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710963}

chrome/browser/ui/views/omnibox/omnibox_view_views.cc

@@ -780,8 +780,8 @@ void OmniboxViewViews::OnTemporaryTextMaybeChanged(
   if (save_original_selection)
     saved_temporary_selection_ = GetSelectedRange();
   SetAccessibilityLabel(display_text, match);
-  int caret_pos = TextAndUIDirectionMatch() ? display_text.length() : 0;
-  SetWindowTextAndCaretPos(display_text, caret_pos, false, notify_text_changed);
+  SetWindowTextAndCaretPos(display_text, display_text.length(), false,
+                           notify_text_changed);
 }
 
 bool OmniboxViewViews::OnInlineAutocompleteTextMaybeChanged(