[Cronet] Add error code and immediatelyRetryable() to UrlRequestException

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.net;
 
 import android.os.SystemClock;
 import android.support.annotation.Nullable;
 import android.util.Log;
 
@@ skipping 435 matching lines @@
             }
         }
     }
 
     /**
      * If listener method throws an exception, request gets canceled
      * and exception is reported via onFailed listener callback.
      * Only called on the Executor.
      */
     private void onListenerException(Exception e) {
-        UrlRequestException requestError = new UrlRequestException(
-                "CalledByNative method has thrown an exception", e);
+        UrlRequestException requestError =
+                new UrlRequestException("UrlRequestListener method has thrown an exception", e);
         Log.e(CronetUrlRequestContext.LOG_TAG,
                 "Exception in CalledByNative method", e);
         // Do not call into listener if request is finished.
         synchronized (mUrlRequestAdapterLock) {
             if (isDone()) {
                 return;
             }
             destroyRequestAdapter(false);
         }
         try {
@@ skipping 183 matching lines @@
                             "Exception in onComplete method", e);
                 }
             }
         };
         postTaskToExecutor(task);
     }
 
     /**
      * Called when error has occured, no callbacks will be called afterwards.
      *
+     * @param errorCode error code from {@link UrlRequestException.ERROR_LISTENER_EXCEPTION_THROWN
+     *         UrlRequestException.ERROR_*}.
      * @param nativeError native net error code.
      * @param errorString textual representation of the error code.
      * @param receivedBytesCount number of bytes received.
      */
     @SuppressWarnings("unused")
     @CalledByNative
-    private void onError(final int nativeError, final String errorString, long receivedBytesCount) {
+    private void onError(
+            int errorCode, int nativeError, String errorString, long receivedBytesCount) {
         if (mResponseInfo != null) {
             mResponseInfo.setReceivedBytesCount(
                     mReceivedBytesCountFromRedirects + receivedBytesCount);
         }
         UrlRequestException requestError = new UrlRequestException(
-                "Exception in CronetUrlRequest: " + errorString,
-                nativeError);
+                "Exception in CronetUrlRequest: " + errorString, errorCode, nativeError);
         failWithException(requestError);
     }
 
     /**
      * Called when request is canceled, no callbacks will be called afterwards.
      */
     @SuppressWarnings("unused")
     @CalledByNative
     private void onCanceled() {
         Runnable task = new Runnable() {
@@ skipping 98 matching lines @@
 
     @NativeClassQualifiedName("CronetURLRequestAdapter")
     private native String nativeGetProxyServer(long nativePtr);
 
     @NativeClassQualifiedName("CronetURLRequestAdapter")
     private native void nativeGetStatus(long nativePtr, UrlRequest.StatusListener listener);
 
     @NativeClassQualifiedName("CronetURLRequestAdapter")
     private native boolean nativeGetWasCached(long nativePtr);
 }