Make SkAndroidCodec support ico

src/codec/SkBmpCodec.cpp

Index: src/codec/SkBmpCodec.cpp
diff --git a/src/codec/SkBmpCodec.cpp b/src/codec/SkBmpCodec.cpp
index 191c2ad8009cbc39e713a2a56452e632a7e84012..aff54021a7a3b4d30b237b6d89a0d99a3caf36d5 100644
--- a/src/codec/SkBmpCodec.cpp
+++ b/src/codec/SkBmpCodec.cpp
@@ -481,6 +481,8 @@ bool SkBmpCodec::ReadHeader(SkStream* stream, bool inIco, SkCodec** codecOut) {
         // Return the codec
         switch (inputFormat) {
             case kStandard_BmpInputFormat:
+                // We require streams to have a memory base for Bmp-in-Ico decodes.
+                SkASSERT(!inIco || nullptr != stream->getMemoryBase());
                 *codecOut = new SkBmpStandardCodec(imageInfo, stream, bitsPerPixel, numColors,
                         bytesPerColor, offset - bytesRead, rowOrder, inIco);
                 return true;