[Cronet] Separate Cronet implementation and API by package name.

components/cronet/android/test/javatests/src/org/chromium/net/UploadTest.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.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.test.util.Feature;
+import org.chromium.net.impl.ChromiumUrlRequest;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.ByteBuffer;
 import java.nio.channels.Channels;
 import java.nio.channels.ReadableByteChannel;
 import java.util.HashMap;
 import java.util.concurrent.Executors;
 
@@ skipping 319 matching lines @@
         // Upload a single empty chunk.
         ByteBuffer byteBuffer = ByteBuffer.allocateDirect(0);
         request.appendChunk(byteBuffer, true);
 
         listener.blockForComplete();
 
         assertEquals(200, listener.mHttpStatusCode);
         assertEquals("", listener.mResponseAsString);
     }
 }