Reduce the number of calls to external estimate provider

net/nqe/external_estimate_provider.h

Index: net/nqe/external_estimate_provider.h
diff --git a/net/nqe/external_estimate_provider.h b/net/nqe/external_estimate_provider.h
index 7fd58f5f9dd3876efcacbd38aa947aa88ccc00a6..3417e99a294ecc5204c15b3a58b3bd55a9e49ec5 100644
--- a/net/nqe/external_estimate_provider.h
+++ b/net/nqe/external_estimate_provider.h
@@ -19,8 +19,16 @@ class NET_EXPORT ExternalEstimateProvider {
  public:
   class NET_EXPORT UpdatedEstimateDelegate {
    public:
-    // Will be called when an updated estimate is available.
-    virtual void OnUpdatedEstimateAvailable() = 0;
+    // Will be called with updated RTT, downstream throughput (in kilobits per

[bengr, 2016/05/27 19:58:42]

nit: downstream throughput (in kilobits per second) and upstream throughput (in
kilobits per second) --> downstream and upstream throughput (both in kilobits
per second)

[tbansal1, 2016/05/27 23:39:15]

Done.

+    // second) and upstream throughput (in kilobits per second) when an updated
+    // estimate is available. If |rtt| is unavailable, it is set to
+    // base::TimeDelta(). If |downstream_throughput_kbps| or
+    // |upstream_throughput_kbps| are unavailble, they are set to -1,
+    // respectively.
+    virtual void OnUpdatedEstimateAvailable(
+        const base::TimeDelta& rtt,
+        int32_t downstream_throughput_kbps,
+        int32_t upstream_throughput_kbps) = 0;
 
    protected:
     UpdatedEstimateDelegate() {}