Change Lo-Fi bool to bitmask to support multiple Previews types

third_party/WebKit/Source/core/fetch/ImageResource.cpp

Index: third_party/WebKit/Source/core/fetch/ImageResource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/ImageResource.cpp b/third_party/WebKit/Source/core/fetch/ImageResource.cpp
index 0a454391815e5909ea81d4e931931a92341c7884..cdf5fb7f9e125d9eb62d86be284bb9533fc2a894 100644
--- a/third_party/WebKit/Source/core/fetch/ImageResource.cpp
+++ b/third_party/WebKit/Source/core/fetch/ImageResource.cpp
@@ -621,8 +621,10 @@ void ImageResource::updateImageAnimationPolicy() {
 }
 
 static bool isLoFiImage(const ImageResource& resource) {
-  if (resource.resourceRequest().loFiState() != WebURLRequest::LoFiOn)
+  if (!(resource.resourceRequest().previewsState() &
+        WebURLRequest::PreviewsState::ServerLoFiOn)) {
     return false;
+  }
   return !resource.isLoaded() ||
          resource.response()
              .httpHeaderField("chrome-proxy-content-transform")