[Mac] Ensure Omnibox text is always right-aligned in RTL

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
 #include <memory>
 
+#include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
 #include "components/omnibox/browser/omnibox_view.h"
 #include "components/security_state/core/security_state.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 class CommandUpdater;
 class OmniboxPopupView;
 class Profile;
@@ skipping 103 matching lines @@
   // If |resource_id| has a PDF image which can be used, return it.
   // Otherwise return the PNG image from the resource bundle.
   static NSImage* ImageForResource(int resource_id);
 
   // Color used to draw suggest text.
   static NSColor* SuggestTextColor();
 
   AutocompleteTextField* field() const { return field_; }
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(OmniboxViewMacTest, WritingDirectionLTR);
+  FRIEND_TEST_ALL_PREFIXES(OmniboxViewMacTest, WritingDirectionRTL);
   // Called when the user hits backspace in |field_|.  Checks whether
   // keyword search is being terminated.  Returns true if the
   // backspace should be intercepted (not forwarded on to the standard
   // machinery).
   bool OnBackspacePressed();
 
   // Returns the field's currently selected range.  Only valid if the
   // field has focus.
   NSRange GetSelectedRange() const;
 
@@ skipping 79 matching lines @@
   // painted. Used to measure omnibox responsiveness with a histogram.
   base::TimeTicks insert_char_time_;
 
   // The time when OnBeforeDrawRect() was called.
   base::TimeTicks draw_rect_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_