[Cronet] Create Builders, rename UrlRequestContext to CronetEngine

components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.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.util.Log;
 import android.util.Pair;
 
 import org.chromium.base.VisibleForTesting;
@@ skipping 448 matching lines @@
             Log.e(CronetUrlRequestContext.LOG_TAG,
                     "Exception posting task to executor", failException);
             // If posting a task throws an exception, then there is no choice
             // but to cancel the request.
             cancel();
         }
     }
 
     private static int convertRequestPriority(int priority) {
         switch (priority) {
-            case REQUEST_PRIORITY_IDLE:
+            case Builder.REQUEST_PRIORITY_IDLE:
                 return RequestPriority.IDLE;
-            case REQUEST_PRIORITY_LOWEST:
+            case Builder.REQUEST_PRIORITY_LOWEST:
                 return RequestPriority.LOWEST;
-            case REQUEST_PRIORITY_LOW:
+            case Builder.REQUEST_PRIORITY_LOW:
                 return RequestPriority.LOW;
-            case REQUEST_PRIORITY_MEDIUM:
+            case Builder.REQUEST_PRIORITY_MEDIUM:
                 return RequestPriority.MEDIUM;
-            case REQUEST_PRIORITY_HIGHEST:
+            case Builder.REQUEST_PRIORITY_HIGHEST:
                 return RequestPriority.HIGHEST;
             default:
                 return RequestPriority.MEDIUM;
         }
     }
 
     private NativeResponseInfo prepareResponseInfoOnNetworkThread(
             int httpStatusCode) {
         long urlRequestAdapter;
         synchronized (mUrlRequestAdapterLock) {
@@ skipping 317 matching lines @@
 
     @NativeClassQualifiedName("CronetURLRequestAdapter")
     private native String nativeGetProxyServer(long nativePtr);
 
     @NativeClassQualifiedName("CronetURLRequestAdapter")
     private native void nativeGetStatus(long nativePtr, UrlRequest.StatusListener listener);
 
     @NativeClassQualifiedName("CronetURLRequestAdapter")
     private native boolean nativeGetWasCached(long nativePtr);
 }