Move gif image decoder to SkCodec

third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h

Index: third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
index 96e6159929067e01cce70e317f64e34bead83d12..15b8df6eb431432e38a9019105e7a1975670deae 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
@@ -396,7 +396,9 @@ class PLATFORM_EXPORT ImageDecoder {
   // |index| is smaller than |frame_buffer_cache_|.size().
   virtual bool FrameStatusSufficientForSuccessors(size_t index) {
     DCHECK(index < frame_buffer_cache_.size());
-    return frame_buffer_cache_[index].GetStatus() != ImageFrame::kFrameEmpty;
+    ImageFrame::Status frame_status = frame_buffer_cache_[index].GetStatus();
+    return frame_status == ImageFrame::kFramePartial ||
+           frame_status == ImageFrame::kFrameComplete;
   }
 
  private: