Add new Cronet exception class for QUIC errors

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

Index: components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
diff --git a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
index d0a6718380c605df8b2159718eefed3c7cb0c2f6..b6446d128fbb5a5bbd05e415c0375f2676d5ea1b 100644
--- a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
+++ b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
@@ -641,14 +641,20 @@ final class CronetUrlRequest implements UrlRequest {
      */
     @SuppressWarnings("unused")
     @CalledByNative
-    private void onError(
-            int errorCode, int nativeError, String errorString, long receivedBytesCount) {
+    private void onError(int errorCode, int nativeError, int nativeQuicError, String errorString,
+            long receivedBytesCount) {
         if (mResponseInfo != null) {
             mResponseInfo.setReceivedBytesCount(
                     mReceivedBytesCountFromRedirects + receivedBytesCount);
         }
-        UrlRequestException requestError = new UrlRequestException(
-                "Exception in CronetUrlRequest: " + errorString, errorCode, nativeError);
+        UrlRequestException requestError;
+        if (nativeError == NetError.ERR_QUIC_PROTOCOL_ERROR) {
+            requestError = new QuicException(

[pauljensen, 2016/06/30 17:35:12]

I don't think we need the requestError variable here or in bidistream.  We can
just do:
if (...) {
  failWithException(new ...);
} else {
  failWithException(new ...);
}

[mgersh, 2016/06/30 22:55:53]

Done.

+                    "Exception in CronetUrlRequest: " + errorString, nativeError, nativeQuicError);
+        } else {
+            requestError = new UrlRequestException(
+                    "Exception in CronetUrlRequest: " + errorString, errorCode, nativeError);
+        }
         failWithException(requestError);
     }