Added Network Quality Estimator Real-time interface to Cronet

components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java

Index: components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
diff --git a/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java b/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
index 3394269c9b3d3eb0463e1bdb517dcadf6a9de049..2788b8e73a9cbb7ce4bd0704605a339b41dc285d 100644
--- a/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
@@ -88,6 +88,13 @@ public abstract class UrlRequestContext {
      */
     public abstract void stopNetLog();
 
+    public abstract void configureNetworkQualityEstimator(

[mef, 2015/08/11 17:16:27]

need javadoc comments for all of these. 
Does it make sense to extract them into separate interface?

[bengr, 2015/08/25 23:43:34]

Done. I don't think a separate interface is needed yet. If we expand NQE support
in Cronet, we may consider it.

+            boolean useLocalHostRequests, boolean useSmallerResponses);
+    public abstract void addRTTObserver(RTTObserver observer);
+    public abstract void removeRTTObserver(RTTObserver observer);
+    public abstract void addBandwidthObserver(BandwidthObserver observer);
+    public abstract void removeBandwidthObserver(BandwidthObserver observer);
+
     /**
      * Create context with given config. If config.legacyMode is true, or
      * native library is not available, then creates HttpUrlConnection-based