Mac: Fix omnibox hint text is 1px lower than typed text.

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 "base/memory/scoped_ptr.h"
@@ skipping 136 matching lines @@
 
   // Update the field with |display_text| and set the selection.
   void SetTextAndSelectedRange(const base::string16& display_text,
                                const NSRange range);
 
   // Pass the current content of |field_| to SetText(), maintaining
   // any selection.  Named to be consistent with GTK and Windows,
   // though here we cannot really do the in-place operation they do.
   void EmphasizeURLComponents() override;
 
+  // Apply our font and paragraph style to |as|.
+  void ApplyTextStyle(NSMutableAttributedString* as);
+
   // Calculates text attributes according to |display_text| and applies them
   // to the given |as| object.
   void ApplyTextAttributes(const base::string16& display_text,
                            NSMutableAttributedString* as);
 
   // Return the number of UTF-16 units in the current buffer, excluding the
   // suggested text.
   int GetOmniboxTextLength() const override;
   NSUInteger GetTextLength() const;
 
@@ skipping 27 matching lines @@
   bool in_coalesced_update_block_;
   bool do_coalesced_text_update_;
   base::string16 coalesced_text_update_;
   bool do_coalesced_range_update_;
   NSRange coalesced_range_update_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_