Cronet: a framework to provide alternative Cronet implementations

components/cronet/android/api/src/org/chromium/net/ImplLoader.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;
-
-import android.content.Context;
-
-import java.lang.reflect.Constructor;
-
-/**
- * Replaceable class providing ability to load Cronet implementation.
- */
-final class ImplLoader {
-    // The class name of the Cronet Engine Builder implementation.
-    private static final String CRONET_ENGINE_BUILDER_IMPL =
-            "org.chromium.net.impl.CronetEngineBuilderImpl";
-
-    /**
-     * Load implementation of {@link ICronetEngineBuilder}.
-     * @param context Android {@link Context} to use for loading.
-     * @return {@link ICronetEngineBuilder} implementation.
-     */
-    static ICronetEngineBuilder load(Context context) {
-        try {
-            Class<? extends ICronetEngineBuilder> delegateImplClass =
-                    Class.forName(CRONET_ENGINE_BUILDER_IMPL)
-                            .asSubclass(ICronetEngineBuilder.class);
-            Constructor<? extends ICronetEngineBuilder> ctor =
-                    delegateImplClass.getConstructor(Context.class);
-            return ctor.newInstance(context);
-        } catch (Exception e) {
-            throw new RuntimeException(
-                    "Unable to construct the implementation of the Cronet Engine Builder: "
-                            + CRONET_ENGINE_BUILDER_IMPL,
-                    e);
-        }
-    }
-}