Remove unused and unnecessary constructor from PlatformFont classes.

ui/gfx/platform_font_pango.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_pango.h"
 
 #include <fontconfig/fontconfig.h>
 #include <pango/pango.h>
 
 #include <algorithm>
@@ skipping 92 matching lines @@
     default_font_ = new Font(desc);
     pango_font_description_free(desc);
 
     DCHECK(default_font_);
   }
 
   InitFromPlatformFont(
       static_cast<PlatformFontPango*>(default_font_->platform_font()));
 }
 
-PlatformFontPango::PlatformFontPango(const Font& other) {
-  InitFromPlatformFont(
-      static_cast<PlatformFontPango*>(other.platform_font()));
-}
-
 PlatformFontPango::PlatformFontPango(NativeFont native_font) {
   std::vector<std::string> family_names;
   base::SplitString(pango_font_description_get_family(native_font), ',',
                     &family_names);
   std::string font_family = FindBestMatchFontFamilyName(family_names);
   InitWithNameAndSize(font_family, gfx::GetPangoFontSizeInPixels(native_font));
 
   int style = 0;
   if (pango_font_description_get_weight(native_font) == PANGO_WEIGHT_BOLD) {
     // TODO(davemoore) What should we do about other weights? We currently
@@ skipping 256 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // PlatformFont, public:
 
 // static
 PlatformFont* PlatformFont::CreateDefault() {
   return new PlatformFontPango;
 }
 
 // static
-PlatformFont* PlatformFont::CreateFromFont(const Font& other) {
-  return new PlatformFontPango(other);
-}
-
-// static
 PlatformFont* PlatformFont::CreateFromNativeFont(NativeFont native_font) {
   return new PlatformFontPango(native_font);
 }
 
 // static
 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name,
                                                   int font_size) {
   return new PlatformFontPango(font_name, font_size);
 }
 
 }  // namespace gfx