Omnibox: Preserve display text and select all on a focus search

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

 // 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.
 
 #include "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
@@ skipping 357 matching lines @@
 
   if (notify_text_changed)
     TextChanged();
 }
 
 void OmniboxViewMac::EnterKeywordModeForDefaultSearchProvider() {
   // We need to do this first, else |SetSelectedRange()| won't work.
   FocusLocation(true);
 
   // Transition the user into keyword mode using their default search provider.
-  // Select their query if they typed one.
   model()->EnterKeywordModeForDefaultSearchProvider(
       KeywordModeEntryMethod::KEYBOARD_SHORTCUT);
-  SelectAll(false);
 }
 
 bool OmniboxViewMac::IsSelectAll() const {
   if (![field_ currentEditor])
     return true;
   const NSRange all_range = NSMakeRange(0, GetTextLength());
   return NSEqualRanges(all_range, GetSelectedRange());
 }
 
 bool OmniboxViewMac::DeleteAtEndPressed() {
@@ skipping 722 matching lines @@
                               display_text);
   NSDictionary* notification_info = @{
       NSAccessibilityAnnouncementKey : announcement,
       NSAccessibilityPriorityKey :     @(NSAccessibilityPriorityHigh)
   };
   NSAccessibilityPostNotificationWithUserInfo(
       [field_ window],
       NSAccessibilityAnnouncementRequestedNotification,
       notification_info);
 }