Remove unnecessary includes in src/pdf/

src/pdf/SkPDFFont.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "SkData.h"
 #include "SkGlyphCache.h"
 #include "SkPaint.h"
 #include "SkPDFCanon.h"
 #include "SkPDFDevice.h"
 #include "SkPDFFont.h"
 #include "SkPDFFontImpl.h"
 #include "SkPDFStream.h"
-#include "SkPDFTypes.h"
 #include "SkPDFUtils.h"
 #include "SkRefCnt.h"
 #include "SkScalar.h"
 #include "SkStream.h"
 #include "SkTypefacePriv.h"
 #include "SkTypes.h"
 #include "SkUtils.h"
 
 #if defined (SK_SFNTLY_SUBSETTER)
     #if defined (GOOGLE3)
@@ skipping 1407 matching lines @@
     }
     return *canon->fCanEmbedTypeface.set(id, canEmbed);
 }
 
 void SkPDFFont::drop() {
     fTypeface = nullptr;
     fFontInfo = nullptr;
     fDescriptor = nullptr;
     this->SkPDFDict::drop();
 }