adding baseline options for super/sub scripting

ui/gfx/render_text_mac.cc

 // 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 "ui/gfx/render_text_mac.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 211 matching lines @@
   // Temporarily apply composition underlines and selection colors.
   ApplyCompositionAndSelectionStyles();
 
   // Note: CFAttributedStringSetAttribute() does not appear to retain the values
   // passed in, as can be verified via CFGetRetainCount(). To ensure the
   // attribute objects do not leak, they are saved to |attributes_|.
   // Clear the attributes storage.
   attributes_.reset(CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks));
 
   // https://developer.apple.com/library/mac/#documentation/Carbon/Reference/CoreText_StringAttributes_Ref/Reference/reference.html
-  internal::StyleIterator style(colors(), styles());
+  internal::StyleIterator style(colors(), baselines(), styles());
   const size_t layout_text_length = GetDisplayText().length();
   for (size_t i = 0, end = 0; i < layout_text_length; i = end) {
     end = TextIndexToDisplayIndex(style.GetRange().end());
     const CFRange range = CFRangeMake(i, end - i);
     base::ScopedCFTypeRef<CGColorRef> foreground(
         CGColorCreateFromSkColor(style.color()));
     CFAttributedStringSetAttribute(attr_string, range,
         kCTForegroundColorAttributeName, foreground);
     CFArrayAppendValue(attributes_, foreground);
 
@@ skipping 114 matching lines @@
     CTUnderlineStyle value = kCTUnderlineStyleNone;
     if (underline && CFNumberGetValue(underline, kCFNumberSInt32Type, &value))
       run->underline = (value == kCTUnderlineStyleSingle);
 
     run_origin.offset(run_width, 0);
   }
   runs_valid_ = true;
 }
 
 }  // namespace gfx