GN: add tests to DM

tests/ImageTest.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 <functional>
 #include <initializer_list>
 #include <vector>
-#include "DMGpuSupport.h"
 
 #include "SkAutoPixmapStorage.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkImageEncoder.h"
 #include "SkImageGenerator.h"
 #include "SkImage_Base.h"
 #include "SkImagePriv.h"
 #include "SkPicture.h"
@@ skipping 972 matching lines @@
     return true;
 }
 
 DEF_TEST(image_roundtrip_encode, reporter) {
     SkBitmap bm0;
     make_all_premul(&bm0);
 
     auto img0 = SkImage::MakeFromBitmap(bm0);
     sk_sp<SkData> data(img0->encode(SkImageEncoder::kPNG_Type, 100));
     auto img1 = SkImage::MakeFromEncoded(data);
-    
+
     SkBitmap bm1;
     bm1.allocPixels(SkImageInfo::MakeN32(256, 256, kPremul_SkAlphaType));
     img1->readPixels(bm1.info(), bm1.getPixels(), bm1.rowBytes(), 0, 0);
-    
+
     REPORTER_ASSERT(reporter, equal(bm0, bm1));
 }
 
 DEF_TEST(image_roundtrip_premul, reporter) {
     SkBitmap bm0;
     make_all_premul(&bm0);
 
     SkBitmap bm1;
     bm1.allocPixels(SkImageInfo::MakeN32(256, 256, kUnpremul_SkAlphaType));
     bm0.readPixels(bm1.info(), bm1.getPixels(), bm1.rowBytes(), 0, 0);
 
     SkBitmap bm2;
     bm2.allocPixels(SkImageInfo::MakeN32(256, 256, kPremul_SkAlphaType));
     bm1.readPixels(bm2.info(), bm2.getPixels(), bm2.rowBytes(), 0, 0);
 
     REPORTER_ASSERT(reporter, equal(bm0, bm2));
 }