Consistently use LoFi for an entire page

content/public/browser/resource_dispatcher_host_delegate.h

Index: content/public/browser/resource_dispatcher_host_delegate.h
diff --git a/content/public/browser/resource_dispatcher_host_delegate.h b/content/public/browser/resource_dispatcher_host_delegate.h
index 181962eee2d3f5ea5f5ce9313e7b87a065cff087..3e66ac3fd1a17aab37e5b8ecd52c61a29e01a74a 100644
--- a/content/public/browser/resource_dispatcher_host_delegate.h
+++ b/content/public/browser/resource_dispatcher_host_delegate.h
@@ -124,6 +124,11 @@ class CONTENT_EXPORT ResourceDispatcherHostDelegate {
   // Notification that a request has completed.
   virtual void RequestComplete(net::URLRequest* url_request);
 
+  // Asks the embedder if Lo-Fi mode should be enabled for the given request. It
+  // is only called for main frame requests with an unspecified Lo-Fi value.
+  virtual bool ShouldEnableLoFiMode(net::URLRequest* url_request,
+                                    content::ResourceContext* resource_context);
+
  protected:
   ResourceDispatcherHostDelegate();
   virtual ~ResourceDispatcherHostDelegate();