Fix decoding GIF to 565

third_party/gif/SkGifImageReader.h

Index: third_party/gif/SkGifImageReader.h
diff --git a/third_party/gif/SkGifImageReader.h b/third_party/gif/SkGifImageReader.h
index fee1a5f3c76022f97b283bc6f1c39091fabfcfe6..5936350681e6509555fb54f86c8889a3e578ea48 100644
--- a/third_party/gif/SkGifImageReader.h
+++ b/third_party/gif/SkGifImageReader.h
@@ -86,6 +86,7 @@ enum SkGIFState {
 };
 
 struct SkGIFFrameContext;
+class SkGIFColorMap;
 
 // LZW decoder state machine.
 class SkGIFLZWContext final : public SkNoncopyable {
@@ -108,7 +109,7 @@ public:
         , m_frameContext(frameContext)
     { }
 
-    bool prepareToDecode();
+    bool prepareToDecode(const SkGIFColorMap& globalMap);
     bool outputRow(const unsigned char* rowBegin);
     bool doLZW(const unsigned char* block, size_t bytesInBlock);
     bool hasRemainingRows() { return SkToBool(rowsRemaining); }
@@ -210,7 +211,7 @@ public:
         m_lzwBlocks.push_back(SkData::MakeWithCopy(data, size));
     }
 
-    bool decode(SkGifCodec* client, bool* frameDecoded);
+    bool decode(SkGifCodec* client, const SkGIFColorMap& globalMap, bool* frameDecoded);
 
     int frameId() const { return m_frameId; }
     void setRect(unsigned x, unsigned y, unsigned width, unsigned height)