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 e6a337eb07c0a9e826adf7e4efddf2ac3f431b50..bfb4055f30538a9bbc16df2852966c74bed487de 100644
--- a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
@@ -119,15 +119,6 @@ class CronetUrlRequestContext extends CronetEngine {
     }
 
     @Override
-    public UrlRequest createRequest(String url, UrlRequest.Callback callback, Executor executor) {
-        synchronized (mLock) {
-            checkHaveAdapter();
-            return new CronetUrlRequest(this, mUrlRequestContextAdapter, url,
-                    UrlRequest.Builder.REQUEST_PRIORITY_MEDIUM, callback, executor);
-        }
-    }
-
-    @Override
     public UrlRequest createRequest(String url, UrlRequest.Callback callback, Executor executor,
             @UrlRequest.Builder.RequestPriority int priority) {
         synchronized (mLock) {