Index: cc/trees/proxy_timing_history.h |
diff --git a/cc/trees/proxy_timing_history.h b/cc/trees/proxy_timing_history.h |
index 9230e8af04e972f75c802878dce3cedb982d8923..5ae86efda229c5e0010e402f627522ea0899e418 100644 |
--- a/cc/trees/proxy_timing_history.h |
+++ b/cc/trees/proxy_timing_history.h |
@@ -19,8 +19,10 @@ class ProxyTimingHistory { |
base::TimeDelta CommitToActivateDurationEstimate() const; |
void DidBeginMainFrame(); |
- void DidCommit(); |
- void DidActivateSyncTree(); |
+ // Returns BeginMainFrame-to-Commit duration. |
+ base::TimeDelta DidCommit(); |
+ // Returns Commit-to-Activate duration. |
+ base::TimeDelta DidActivateSyncTree(); |
void DidStartDrawing(); |
// Returns draw duration. |
base::TimeDelta DidFinishDrawing(); |