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

third_party/WebKit/public/platform/WebURLRequest.h

Index: third_party/WebKit/public/platform/WebURLRequest.h
diff --git a/third_party/WebKit/public/platform/WebURLRequest.h b/third_party/WebKit/public/platform/WebURLRequest.h
index da255461511c29b90c397fbf30b9d9da2781360d..0d84beebecdad3d1509cbb3510db7a15576017c1 100644
--- a/third_party/WebKit/public/platform/WebURLRequest.h
+++ b/third_party/WebKit/public/platform/WebURLRequest.h
@@ -29,7 +29,7 @@
  */
 
 #ifndef WebURLRequest_h
-#define WebURLRequest_h
+#define WebURLRequest_hf
 
 #include "WebAddressSpace.h"
 #include "WebCommon.h"
@@ -136,13 +136,17 @@ class WebURLRequest {
     ReportIntent,  // Report metrics with UI action displayed intent.
   };
 
-  // The LoFi state which determines whether to request a Lo-Fi version of the
-  // resource.
-  enum LoFiState {
-    LoFiUnspecified,  // Let the browser process decide whether or not to
-                      // request the Lo-Fi version.
-    LoFiOff,          // Request a normal (non-Lo-Fi) version of the resource.
-    LoFiOn,           // Request a Lo-Fi version of the resource.
+  // The Previews state which determines whether to request a Preview version of
+  // the resource.
+  enum PreviewsState {
+    PreviewsUnspecified = 1 << 0,  // Let the browser process decide whether or
+                                   // not to request Preview types.
+    ServerLoFiOn = 1 << 1,         // Request a Lo-Fi version of the resource
+                                   // from the server.
+    ClientLoFiOn = 1 << 2,         // Request a Lo-Fi version of the resource
+                                   // from the client.
+    PreviewsOff = 1 << 3           // Request a normal (non-Preview) version of
+                                   // the resource.
   };
 
   // Indicates which types of ServiceWorkers should skip handling this request.
@@ -285,10 +289,10 @@ class WebURLRequest {
   BLINK_PLATFORM_EXPORT FetchRedirectMode getFetchRedirectMode() const;
   BLINK_PLATFORM_EXPORT void setFetchRedirectMode(FetchRedirectMode);
 
-  // The LoFi state which determines whether to request a Lo-Fi version of the
-  // resource.
-  BLINK_PLATFORM_EXPORT LoFiState getLoFiState() const;
-  BLINK_PLATFORM_EXPORT void setLoFiState(LoFiState);
+  // The Previews state which determines whether to request a Preview version of
+  // the resource.
+  BLINK_PLATFORM_EXPORT int getPreviewsState() const;
+  BLINK_PLATFORM_EXPORT void setPreviewsState(int);
 
   // Extra data associated with the underlying resource request. Resource
   // requests can be copied. If non-null, each copy of a resource requests