Add SetSupportsQuic method to explicitly specify server that supports QUIC.

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

Index: components/cronet/android/java/src/org/chromium/net/HttpUrlRequest.java
diff --git a/components/cronet/android/java/src/org/chromium/net/HttpUrlRequest.java b/components/cronet/android/java/src/org/chromium/net/HttpUrlRequest.java
index 6501d19c61b25f6a6f49069c82cc6e992e5cb0dd..08a52a2be762b09771efccfddb80eacfe577083d 100644
--- a/components/cronet/android/java/src/org/chromium/net/HttpUrlRequest.java
+++ b/components/cronet/android/java/src/org/chromium/net/HttpUrlRequest.java
@@ -102,6 +102,14 @@ public interface HttpUrlRequest {
     boolean isCanceled();
 
     /**
+     * Returns protocol (e.g. "quic/1+spdy/3") negotiated with server. Returns
+     * empty string if no protocol was negotiated, or the protocol is not known.
+     * Does not return HTTP versions. Must be called after onResponseStarted

[mmenke, 2014/09/10 18:21:27]

Maybe "Does not return HTTP versions" -> "Returns empty when using plain http or
https."

[mef, 2014/09/10 20:18:48]

Done.

+     * but before request is recycled.
+     */
+    String getNegotiatedProtocol();
+
+    /**
      * Returns the entire response as a ByteBuffer.
      */
     ByteBuffer getByteBuffer();