Index: components/data_reduction_proxy/core/common/lofi_decider.h |
diff --git a/components/data_reduction_proxy/core/common/lofi_decider.h b/components/data_reduction_proxy/core/common/lofi_decider.h |
index 727b87b59927fe34b9e8bf159cdd1a54dd2aff48..da635106230f1fdbcbdb0c1dc9e5385b6448a9e5 100644 |
--- a/components/data_reduction_proxy/core/common/lofi_decider.h |
+++ b/components/data_reduction_proxy/core/common/lofi_decider.h |
@@ -26,8 +26,10 @@ class LoFiDecider { |
// Returns true when Lo-Fi mode is on for the given |request|. If the |
// |request| is using Lo-Fi mode, adds the "q=low" directive to the |headers|. |
- // If the user is in the experiment control group and Lo-Fi is on, adds the |
- // experiment directive "exp=lofi_active_control". |
+ // If the |request| is using Lo-Fi preview mode, and it is a main frame |
+ // request adds the "q=preview" and it is a main frame request directive to |
+ // the |headers|. If the user is in the experiment control group and Lo-Fi is |
+ // on, adds the experiment directive "exp=lofi_active_control". |
virtual bool MaybeAddLoFiDirectiveToHeaders( |
const net::URLRequest& request, |
net::HttpRequestHeaders* headers) const = 0; |