Remove unused and unnecessary constructor from PlatformFont classes.

ui/gfx/platform_font_win.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/platform_font_win.h"
 
 #include <windows.h>
 #include <math.h>
 
 #include <algorithm>
@@ skipping 48 matching lines @@
     PlatformFontWin::adjust_font_callback = NULL;
 PlatformFontWin::GetMinimumFontSizeCallback
     PlatformFontWin::get_minimum_font_size_callback = NULL;
 
 ////////////////////////////////////////////////////////////////////////////////
 // PlatformFontWin, public
 
 PlatformFontWin::PlatformFontWin() : font_ref_(GetBaseFontRef()) {
 }
 
-PlatformFontWin::PlatformFontWin(const Font& other) {
-  InitWithCopyOfHFONT(other.GetNativeFont());
-}
-
 PlatformFontWin::PlatformFontWin(NativeFont native_font) {
   InitWithCopyOfHFONT(native_font);
 }
 
 PlatformFontWin::PlatformFontWin(const std::string& font_name,
                                  int font_size) {
   InitWithFontNameAndSize(font_name, font_size);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 179 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // PlatformFont, public:
 
 // static
 PlatformFont* PlatformFont::CreateDefault() {
   return new PlatformFontWin;
 }
 
 // static
-PlatformFont* PlatformFont::CreateFromFont(const Font& other) {
-  return new PlatformFontWin(other);
-}
-
-// static
 PlatformFont* PlatformFont::CreateFromNativeFont(NativeFont native_font) {
   return new PlatformFontWin(native_font);
 }
 
 // static
 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name,
                                                   int font_size) {
   return new PlatformFontWin(font_name, font_size);
 }
 
 }  // namespace gfx