Remove unused and unnecessary constructor from PlatformFont classes.

ui/gfx/platform_font_win.cc

Index: ui/gfx/platform_font_win.cc
===================================================================
--- ui/gfx/platform_font_win.cc	(revision 132062)
+++ ui/gfx/platform_font_win.cc	(working copy)
@@ -66,10 +66,6 @@
 PlatformFontWin::PlatformFontWin() : font_ref_(GetBaseFontRef()) {
 }
 
-PlatformFontWin::PlatformFontWin(const Font& other) {
-  InitWithCopyOfHFONT(other.GetNativeFont());
-}
-
 PlatformFontWin::PlatformFontWin(NativeFont native_font) {
   InitWithCopyOfHFONT(native_font);
 }
@@ -269,11 +265,6 @@
 }
 
 // static
-PlatformFont* PlatformFont::CreateFromFont(const Font& other) {
-  return new PlatformFontWin(other);
-}
-
-// static
 PlatformFont* PlatformFont::CreateFromNativeFont(NativeFont native_font) {
   return new PlatformFontWin(native_font);
 }