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

third_party/WebKit/Source/platform/network/ResourceRequest.h

Index: third_party/WebKit/Source/platform/network/ResourceRequest.h
diff --git a/third_party/WebKit/Source/platform/network/ResourceRequest.h b/third_party/WebKit/Source/platform/network/ResourceRequest.h
index c3959119aad726c646e85b8c183e82527554856f..ac48e6dfc730ebbad7c2f8dce6102d046ef3f5bf 100644
--- a/third_party/WebKit/Source/platform/network/ResourceRequest.h
+++ b/third_party/WebKit/Source/platform/network/ResourceRequest.h
@@ -271,10 +271,8 @@ class PLATFORM_EXPORT ResourceRequest final {
     m_fetchRedirectMode = redirect;
   }
 
-  WebURLRequest::LoFiState loFiState() const { return m_loFiState; }
-  void setLoFiState(WebURLRequest::LoFiState loFiState) {
-    m_loFiState = loFiState;
-  }
+  int previewsState() const { return m_previewsState; }
+  void setPreviewsState(int previewsState) { m_previewsState = previewsState; }
 
   bool cacheControlContainsNoCache() const;
   bool cacheControlContainsNoStore() const;
@@ -346,7 +344,7 @@ class PLATFORM_EXPORT ResourceRequest final {
   WebURLRequest::FetchRequestMode m_fetchRequestMode;
   WebURLRequest::FetchCredentialsMode m_fetchCredentialsMode;
   WebURLRequest::FetchRedirectMode m_fetchRedirectMode;
-  WebURLRequest::LoFiState m_loFiState;
+  int m_previewsState;
   ReferrerPolicy m_referrerPolicy;
   bool m_didSetHTTPReferrer;
   bool m_checkForBrowserSideNavigation;
@@ -397,7 +395,7 @@ struct CrossThreadResourceRequestData {
   WebURLRequest::FetchRequestMode m_fetchRequestMode;
   WebURLRequest::FetchCredentialsMode m_fetchCredentialsMode;
   WebURLRequest::FetchRedirectMode m_fetchRedirectMode;
-  WebURLRequest::LoFiState m_loFiState;
+  int m_previewsState;
   ReferrerPolicy m_referrerPolicy;
   bool m_didSetHTTPReferrer;
   bool m_checkForBrowserSideNavigation;