Add support for multiple frames in SkCodec

tests/CodecTest.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 452 matching lines @@
     // ICO
     // FIXME: We are not ready to test incomplete ICOs
     // These two tests examine interestingly different behavior:
     // Decodes an embedded BMP image
     check(r, "color_wheel.ico", SkISize::Make(128, 128), true, false, false);
     // Decodes an embedded PNG image
     check(r, "google_chrome.ico", SkISize::Make(256, 256), false, false, false, true);
 
     // GIF
     // FIXME: We are not ready to test incomplete GIFs
-    check(r, "box.gif", SkISize::Make(200, 55), true, false, false);
-    check(r, "color_wheel.gif", SkISize::Make(128, 128), true, false, false);
+    check(r, "box.gif", SkISize::Make(200, 55), false, false, false);
+    check(r, "color_wheel.gif", SkISize::Make(128, 128), false, false, false);
     // randPixels.gif is too small to test incomplete
-    check(r, "randPixels.gif", SkISize::Make(8, 8), true, false, false);
+    check(r, "randPixels.gif", SkISize::Make(8, 8), false, false, false);
 
     // JPG
     check(r, "CMYK.jpg", SkISize::Make(642, 516), true, false, true);
     check(r, "color_wheel.jpg", SkISize::Make(128, 128), true, false, true);
     // grayscale.jpg is too small to test incomplete
     check(r, "grayscale.jpg", SkISize::Make(128, 128), true, false, false);
     check(r, "mandrill_512_q075.jpg", SkISize::Make(512, 512), true, false, true);
     // randPixels.jpg is too small to test incomplete
     check(r, "randPixels.jpg", SkISize::Make(8, 8), true, false, false);
 
@@ skipping 772 matching lines @@
     }
 };
 
 DEF_TEST(Codec_fallBack, r) {
     // SkAndroidCodec needs to be able to fall back to scanline decoding
     // if incremental decoding does not work. Make sure this does not
     // require a rewind.
 
     // Formats that currently do not support incremental decoding
     auto files = {
-            "box.gif",
+            // FIXME: box.gif does not currently support either.
+            // "box.gif",
             "CMYK.jpg",
             "color_wheel.ico",
             "mandrill.wbmp",
             "randPixels.bmp",
             };
     for (auto file : files) {
         SkStream* stream = LimitedRewindingStream::Make(file, 14);
         if (!stream) {
             SkDebugf("Missing resources (%s). Set --resourcePath.\n", file);
             return;
@@ skipping 15 matching lines @@
             continue;
         }
 
         // Scanline decoding should not require a rewind.
         SkCodec::Result result = codec->startScanlineDecode(info);
         if (SkCodec::kSuccess != result) {
             ERRORF(r, "Scanline decoding failed for %s with %i", file, result);
         }
     }
 }