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

components/cronet/android/test/javatests/src/org/chromium/net/CronetUploadTest.java

 // Copyright 2015 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.CronetTestBase.OnlyRunNativeCronet;
+import org.chromium.net.impl.CronetUploadDataStream;
 
 import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
 /**
  * Tests that directly drive {@code CronetUploadDataStream} and
  * {@code UploadDataProvider} to simulate different ordering of reset, init,
  * read, and rewind calls.
@@ skipping 273 matching lines @@
         // will then destroy the CronetUploadDataStreamAdapter.
         mHandler.destroyNativeObjects();
 
         // Signal rewind completes, and wait for init to complete.
         mDataProvider.onRewindSucceeded(mUploadDataStream);
 
         assertEquals(1, mDataProvider.getNumRewindCalls());
         assertEquals(1, mDataProvider.getNumReadCalls());
     }
 }