Make SkAndroidCodec support gif

src/codec/SkSampledCodec.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 "SkCodec.h"
 #include "SkCodecPriv.h"
 #include "SkMath.h"
@@ skipping 208 matching lines @@
                     if (!fCodec->skipScanlines(sampleY - 1)) {
                         fCodec->fillIncompleteImage(info, pixels, rowBytes,
                                 options.fZeroInitialized, dstHeight, y + 1);
                         return SkCodec::kIncompleteInput;
                     }
                 }
                 pixelPtr = SkTAddOffset<void>(pixelPtr, rowBytes);
             }
             return SkCodec::kSuccess;
         }
+        case SkCodec::kOutOfOrder_SkScanlineOrder:
         case SkCodec::kBottomUp_SkScanlineOrder: {
-            // Note that this mode does not support subsetting.
+            // Note that these modes do not support subsetting.
             SkASSERT(0 == subsetY && nativeSize.height() == subsetHeight);
             int y;
             for (y = 0; y < nativeSize.height(); y++) {
                 int srcY = fCodec->nextScanline();
                 if (is_coord_necessary(srcY, sampleY, dstHeight)) {
                     void* pixelPtr = SkTAddOffset<void>(pixels,
                             rowBytes * get_dst_coord(srcY, sampleY));
                     if (1 != fCodec->getScanlines(pixelPtr, 1, rowBytes)) {
                         break;
                     }
@@ skipping 45 matching lines @@
                 // fCodec has already handled filling uninitialized memory.
                 return SkCodec::kIncompleteInput;
             }
             return SkCodec::kSuccess;
         }
         default:
             SkASSERT(false);
             return SkCodec::kUnimplemented;
     }
 }