Fill incomplete images in SkCodec parent class

src/codec/SkCodec_wbmp.h

Index: src/codec/SkCodec_wbmp.h
diff --git a/src/codec/SkCodec_wbmp.h b/src/codec/SkCodec_wbmp.h
index 220570b0db790c8f7b8cb6ffb1d3c1f928938056..5fce867981b08d5e61abe01e67ecc9122d3124fb 100644
--- a/src/codec/SkCodec_wbmp.h
+++ b/src/codec/SkCodec_wbmp.h
@@ -25,7 +25,7 @@ public:
 protected:
     SkEncodedFormat onGetEncodedFormat() const override;
     Result onGetPixels(const SkImageInfo&, void*, size_t,
-                       const Options&, SkPMColor[], int*) override;
+                       const Options&, SkPMColor[], int*, int*) override;
     bool onRewind() override;
 private:
     /*
@@ -37,7 +37,7 @@ private:
     /*
      * Read a src row from the encoded stream
      */
-    Result readRow(uint8_t* row);
+    bool readRow(uint8_t* row);
 
     SkWbmpCodec(const SkImageInfo&, SkStream*);
 
@@ -49,7 +49,7 @@ private:
     SkAutoTMalloc<uint8_t>       fSrcBuffer;
 
     // FIXME: Override onSkipScanlines to avoid swizzling.
-    Result onGetScanlines(void* dst, int count, size_t dstRowBytes) override;
+    uint32_t onGetScanlines(void* dst, int count, size_t dstRowBytes) override;
     Result onStartScanlineDecode(const SkImageInfo& dstInfo, const Options& options,
             SkPMColor inputColorTable[], int* inputColorCount) override;