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

components/cronet/android/java/src/org/chromium/net/impl/CronetEngineBuilderImpl.java

 // Copyright 2016 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.impl;
 
 import android.content.Context;
 import android.support.annotation.IntDef;
 import android.support.annotation.VisibleForTesting;
 import android.util.Log;
 
@@ skipping 54 matching lines @@
         final Date mExpirationDate;
 
         Pkp(String host, byte[][] hashes, boolean includeSubdomains, Date expirationDate) {
             mHost = host;
             mHashes = hashes;
             mIncludeSubdomains = includeSubdomains;
             mExpirationDate = expirationDate;
         }
     }
 
-    private static final String TAG = "CronetEngineBuilder";
+    private static final String TAG = CronetEngineBuilderImpl.class.getSimpleName();
     private static final String NATIVE_CRONET_IMPL_CLASS =
             "org.chromium.net.impl.CronetUrlRequestContext";
     private static final String JAVA_CRONET_IMPL_CLASS = "org.chromium.net.impl.JavaCronetEngine";
     private static final Pattern INVALID_PKP_HOST_NAME = Pattern.compile("^[0-9\\.]*$");
 
     // Private fields are simply storage of configuration for the resulting CronetEngine.
     // See setters below for verbose descriptions.
     private final Context mApplicationContext;
     private final List<QuicHint> mQuicHints = new LinkedList<>();
     private final List<Pkp> mPkps = new LinkedList<>();
@@ skipping 405 matching lines @@
         } catch (ClassNotFoundException e) {
             // Leave as null.
             Log.i(TAG, "Class loader " + loader + " cannot find Cronet engine implementation: "
                             + name + ". Will try to find an alternative implementation.");
         } catch (Exception e) {
             throw new IllegalStateException("Cannot instantiate: " + name, e);
         }
         return cronetEngine;
     }
 }