Disable RAW test on Chrome OS, Windows

tests/CodexTest.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 "Resources.h"
 #include "SkAndroidCodec.h"
 #include "SkBitmap.h"
@@ skipping 434 matching lines @@
     check(r, "mandrill_32.png", SkISize::Make(32, 32), true, false, false);
     check(r, "mandrill_512.png", SkISize::Make(512, 512), true, false, false);
     check(r, "mandrill_64.png", SkISize::Make(64, 64), true, false, false);
     check(r, "plane.png", SkISize::Make(250, 126), true, false, false);
     // FIXME: We are not ready to test incomplete interlaced pngs
     check(r, "plane_interlaced.png", SkISize::Make(250, 126), true, false, false);
     check(r, "randPixels.png", SkISize::Make(8, 8), true, false, false);
     check(r, "yellow_rose.png", SkISize::Make(400, 301), true, false, false);
 
     // RAW
+#if defined(SK_CODEC_DECODES_RAW)
     check(r, "sample_1mp.dng", SkISize::Make(600, 338), false, false, false);
+#endif
 }
 
 // Test interlaced PNG in stripes, similar to DM's kStripe_Mode
 DEF_TEST(Codec_stripes, r) {
     const char * path = "plane_interlaced.png";
     SkAutoTDelete<SkStream> stream(resource(path));
     if (!stream) {
         SkDebugf("Missing resource '%s'\n", path);
     }
 
@@ skipping 499 matching lines @@
     // Now test an image which is too big. Any image with a larger header (i.e.
     // has bigger width/height) is also too big.
     const unsigned char tooBigWbmp[] = { 0x00, 0x00,           // Header
                                          0x84, 0x80, 0x00,     // W: 65536
                                          0x84, 0x80, 0x00 };   // H: 65536
     stream.reset(new SkMemoryStream(tooBigWbmp, sizeof(tooBigWbmp), false));
     codec.reset(SkCodec::NewFromStream(stream.detach()));
 
     REPORTER_ASSERT(r, !codec);
 }