Add HttpUrlConnection backed implementation of CronetEngine.

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

Index: components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
diff --git a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
index da864df6ec05231bf33a3c033fcb3f1985b2a2f7..cac2e321c6fa6ff7cb15c15915ff212a8af7b581 100644
--- a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
@@ -25,7 +25,6 @@ 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;
@@ -125,22 +124,6 @@ class CronetUrlRequestContext extends CronetEngine {
     }
 
     @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) {