Revert of Make SkPngCodec decode progressively.

tests/ColorSpaceTest.cpp

 /*
  * Copyright 2016 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 "SkCodec.h"
 #include "SkColorSpace.h"
@@ skipping 49 matching lines @@
 }
 
 DEF_TEST(ColorSpaceParsePngICCProfile, r) {
     SkAutoTDelete<SkStream> stream(resource("color_wheel_with_profile.png"));
     REPORTER_ASSERT(r, nullptr != stream);
     if (!stream) {
         return;
     }
 
     SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
-    if (!codec) {
-        ERRORF(r, "Failed to create codec from a PNG. Is PNG support missing (or too old)?");
-        return;
-    }
+    REPORTER_ASSERT(r, nullptr != codec);
 
 #if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6)
     SkColorSpace* colorSpace = codec->getColorSpace();
     REPORTER_ASSERT(r, nullptr != colorSpace);
 
     test_space(r, colorSpace, &g_sRGB_XYZ[0], &g_sRGB_XYZ[3], &g_sRGB_XYZ[6], g_sRGB_gamma);
 #endif
 }
 
 DEF_TEST(ColorSpaceParseJpegICCProfile, r) {
@@ skipping 73 matching lines @@
         REPORTER_ASSERT(r, !cs == !rec.fExpectedToSucceed);
         if (cs) {
             REPORTER_ASSERT(r, SkColorSpace::k2Dot2Curve_GammaNamed == cs->gammaNamed());
         }
     }
 
     SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType);
     REPORTER_ASSERT(r, kSRGB_SkColorProfileType == info.profileType());
     REPORTER_ASSERT(r, SkColorSpace::k2Dot2Curve_GammaNamed == info.colorSpace()->gammaNamed());
 }