Clean up a few includes, introduce iwyu.

src/ports/SkFontMgr_android.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
+#include "SkFixed.h"
 #include "SkFontDescriptor.h"
 #include "SkFontHost_FreeType_common.h"
 #include "SkFontMgr.h"
 #include "SkFontMgr_android.h"
 #include "SkFontMgr_android_parser.h"
 #include "SkFontStyle.h"
+#include "SkRefCnt.h"
+#include "SkString.h"
 #include "SkStream.h"
+#include "SkTArray.h"
 #include "SkTDArray.h"
 #include "SkTSearch.h"
+#include "SkTemplates.h"
 #include "SkTypeface.h"
 #include "SkTypefaceCache.h"
 
 #include <limits>
+#include <stdlib.h>
+
+class SkData;
 
 class SkTypeface_Android : public SkTypeface_FreeType {
 public:
     SkTypeface_Android(const SkFontStyle& style,
                        bool isFixedPitch,
                        const SkString& familyName)
         : INHERITED(style, SkTypefaceCache::NewFontID(), isFixedPitch)
         , fFamilyName(familyName)
         { }
 
@@ skipping 362 matching lines @@
             SkAutoTUnref<SkTypeface_AndroidSystem> face(family->matchStyle(style));
 
             if (!langTag.isEmpty() && !face->fLang.getTag().startsWith(langTag.c_str())) {
                 continue;
             }
 
             if (SkToBool(face->fVariantStyle & kElegant_FontVariant) != elegant) {
                 continue;
             }
 
-            SkPaint paint;
-            paint.setTypeface(face);
-            paint.setTextEncoding(SkPaint::kUTF32_TextEncoding);
-
-            uint16_t glyphID;
-            paint.textToGlyphs(&character, sizeof(character), &glyphID);
-            if (glyphID != 0) {
+            if (face->charsToGlyphs(&character, SkTypeface::kUTF32_Encoding, NULL, 0)) {
                 return face.detach();
             }
         }
         return NULL;
     }
 
     virtual SkTypeface* onMatchFamilyStyleCharacter(const char familyName[],
                                                     const SkFontStyle& style,
                                                     const char* bcp47[],
                                                     int bcp47Count,
@@ skipping 159 matching lines @@
         SkASSERT(custom->fSystemFontUse < SK_ARRAY_COUNT(gSystemFontUseStrings));
         SkDEBUGF(("SystemFontUse: %s BasePath: %s Fonts: %s FallbackFonts: %s\n",
                   gSystemFontUseStrings[custom->fSystemFontUse],
                   custom->fBasePath,
                   custom->fFontsXml,
                   custom->fFallbackFontsXml));
     }
 
     return SkNEW_ARGS(SkFontMgr_Android, (custom));
 }