Change string16 to std::string in the gfx::Font() interface.

chrome/browser/ui/cocoa/download/download_item_cell.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/download/download_item_cell.h"
 
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/download/download_util.h"
 #import "chrome/browser/themes/theme_service.h"
@@ skipping 318 matching lines @@
                                   radius:radius];
   [path appendBezierPathWithArcFromPoint:topRight
                                 toPoint:topLeft
                                  radius:radius];
   [path lineToPoint:topLeft];
   return path;
 }
 
 - (NSString*)elideTitle:(int)availableWidth {
   NSFont* font = [self font];
-  gfx::Font font_chr(base::SysNSStringToUTF16([font fontName]),
+  gfx::Font font_chr(base::SysNSStringToUTF8([font fontName]),
                      [font pointSize]);
 
   return base::SysUTF16ToNSString(
       ui::ElideFilename(downloadPath_, font_chr, availableWidth));
 }
 
 - (NSString*)elideStatus:(int)availableWidth {
   NSFont* font = [self secondaryFont];
-  gfx::Font font_chr(base::SysNSStringToUTF16([font fontName]),
+  gfx::Font font_chr(base::SysNSStringToUTF8([font fontName]),
                      [font pointSize]);
 
   return base::SysUTF16ToNSString(ui::ElideText(
       base::SysNSStringToUTF16([self secondaryTitle]),
       font_chr,
       availableWidth,
       false));
 }
 
 - (ui::ThemeProvider*)backgroundThemeWrappingProvider:
@@ skipping 325 matching lines @@
   }
   return self;
 }
 
 - (void)setCurrentProgress:(NSAnimationProgress)progress {
   [super setCurrentProgress:progress];
   [cell_ animation:self progressed:progress];
 }
 
 @end