[rAC, OSX] Fix Omnibox font issue

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/metrics/histogram.h"
@@ skipping 397 matching lines @@
     NSTextStorage* storage = [editor textStorage];
     [storage beginEditing];
 
     // Clear the existing attributes from the text storage, then
     // overlay the appropriate Omnibox attributes.
     [storage setAttributes:[NSDictionary dictionary]
                      range:NSMakeRange(0, [storage length])];
     ApplyTextAttributes(GetText(), storage);
 
     [storage endEditing];
+
+    // This function can be called during the editor's -resignFirstResponder. If
+    // that happens, |storage| and |field_| will not be synced automatically any
+    // more. Calling -stringValue ensures that |field_| reflects the changes to
+    // |storage|.
+    [field_ stringValue];
   } else {
     SetText(GetText());
   }
 }
 
 void OmniboxViewMac::ApplyTextAttributes(const base::string16& display_text,
                                          NSMutableAttributedString* as) {
   NSUInteger as_length = [as length];
   NSRange as_entire_string = NSMakeRange(0, as_length);
 
@@ skipping 549 matching lines @@
 
 NSUInteger OmniboxViewMac::GetTextLength() const {
   return [field_ currentEditor] ?  [[[field_ currentEditor] string] length] :
                                    [[field_ stringValue] length];
 }
 
 bool OmniboxViewMac::IsCaretAtEnd() const {
   const NSRange selection = GetSelectedRange();
   return NSMaxRange(selection) == GetTextLength();
 }