Revert of IWYU: 'core' target, files starting A-C.

gm/plus.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
-#include "SkPath.h"
 
 DEF_SIMPLE_GM(PlusMergesAA, canvas, 256, 256) {
     SkPaint p;
     p.setColor(SK_ColorRED);
     p.setAntiAlias(true);  //  <-- crucial to the test that we use AA
 
     // Draw a two red squares.
     canvas->drawRect(SkRect::MakeWH(100, 100), p);
     canvas->drawRect(SkRect::MakeXYWH(150, 0, 100, 100), p);
 
@@ skipping 16 matching lines @@
     canvas->drawPath(bottomRight, p);
 
     // Using Plus on the right should merge the AA of seam together completely covering the red.
     canvas->saveLayer(nullptr, nullptr);
       p.setXfermodeMode(SkXfermode::kPlus_Mode);
       canvas->translate(150, 0);
       canvas->drawPath(upperLeft, p);
       canvas->drawPath(bottomRight, p);
     canvas->restore();
 }