[Cronet] Fix up log TAGs to be accurate and prevent future inaccuracies.

components/cronet/android/api/src/org/chromium/net/CronetEngine.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.annotation.SuppressLint;
 import android.content.Context;
 import android.net.http.HttpResponseCache;
 import android.support.annotation.IntDef;
@@ skipping 647 matching lines @@
                 cronetEngine = new JavaCronetEngine(getUserAgent());
             }
             Log.i(TAG, "Using network stack: " + cronetEngine.getVersionString());
             // Clear MOCK_CERT_VERIFIER reference if there is any, since
             // the ownership has been transferred to the engine.
             mMockCertVerifier = 0;
             return cronetEngine;
         }
     }
 
-    private static final String TAG = "UrlRequestFactory";
+    private static final String TAG = CronetEngine.class.getSimpleName();
     private static final String CRONET_URL_REQUEST_CONTEXT =
             "org.chromium.net.CronetUrlRequestContext";
 
     /**
      * Creates a {@link UrlRequest} object. All callbacks will
      * be called on {@code executor}'s thread. {@code executor} must not run
      * tasks on the current thread to prevent blocking networking operations
      * and causing exceptions during shutdown. Request is given medium priority,
      * see {@link UrlRequest.Builder#REQUEST_PRIORITY_MEDIUM}. To specify other
      * priorities see {@link #createRequest(String, UrlRequest.Callback,
@@ skipping 468 matching lines @@
      * @hide as it's a prototype.
      */
     public interface RequestFinishedListener {
         /**
          * Invoked with request info.
          * @param requestInfo {@link UrlRequestInfo} for finished request.
          */
         void onRequestFinished(UrlRequestInfo requestInfo);
     }
 }