Add HttpUrlConnection backed implementation of CronetEngine.

components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.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.Build;
 import android.os.ConditionVariable;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Process;
 import android.util.Log;
 
 import org.chromium.base.ObserverList;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.base.annotations.NativeClassQualifiedName;
 import org.chromium.base.annotations.UsedByReflection;
 import org.chromium.net.urlconnection.CronetHttpURLConnection;
 import org.chromium.net.urlconnection.CronetURLStreamHandlerFactory;
 
 import java.net.Proxy;
 import java.net.URL;
 import java.net.URLConnection;
 import java.net.URLStreamHandlerFactory;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Executor;
 import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import javax.annotation.concurrent.GuardedBy;
 
 /**
  * CronetEngine using Chromium HTTP stack implementation.
@@ skipping 79 matching lines @@
                     quicHint.mAlternatePort);
         }
         for (Builder.Pkp pkp : builder.publicKeyPins()) {
             nativeAddPkp(urlRequestContextConfig, pkp.mHost, pkp.mHashes, pkp.mIncludeSubdomains,
                     pkp.mExpirationDate.getTime());
         }
         return urlRequestContextConfig;
     }
 
     @Override
-    public UrlRequest createRequest(String url, UrlRequest.Callback callback, Executor executor) {
-        return createRequest(url, callback, executor, UrlRequest.Builder.REQUEST_PRIORITY_MEDIUM,
-                Collections.emptyList());
-    }
-
-    @Override
-    public UrlRequest createRequest(String url, UrlRequest.Callback callback, Executor executor,
-            @UrlRequest.Builder.RequestPriority int priority) {
-        synchronized (mLock) {
-            checkHaveAdapter();
-            return new CronetUrlRequest(this, mUrlRequestContextAdapter, url, priority, callback,
-                    executor, Collections.emptyList(), mNetworkQualityEstimatorEnabled);
-        }
-    }
-
-    @Override
     public UrlRequest createRequest(String url, UrlRequest.Callback callback, Executor executor,
             int priority, Collection<Object> requestAnnotations) {
         synchronized (mLock) {
             checkHaveAdapter();
             boolean metricsCollectionEnabled = mNetworkQualityEstimatorEnabled;
             if (metricsCollectionEnabled) { // Collect metrics only if someone is listening.
                 synchronized (mNetworkQualityLock) {
                     metricsCollectionEnabled = !mFinishedListenerList.isEmpty();
                 }
             }
@@ skipping 358 matching lines @@
     @NativeClassQualifiedName("CronetURLRequestContextAdapter")
     private native void nativeEnableNetworkQualityEstimator(
             long nativePtr, boolean useLocalHostRequests, boolean useSmallerResponses);
 
     @NativeClassQualifiedName("CronetURLRequestContextAdapter")
     private native void nativeProvideRTTObservations(long nativePtr, boolean should);
 
     @NativeClassQualifiedName("CronetURLRequestContextAdapter")
     private native void nativeProvideThroughputObservations(long nativePtr, boolean should);
 }