Moved Cronet code under Connectivity

$ cp -r Cronet/ Connectivity/
$ rm -r Cronet/*

Bug: 251054736
Test: atest CronetApiTest
Change-Id: I25d5238fe530ffaa830ce64c67b351d40b8030ea
CTS-Coverage-Bug: 251012627
diff --git a/Cronet/AndroidManifest.xml b/Cronet/AndroidManifest.xml
new file mode 100644
index 0000000..f3b3c3e
--- /dev/null
+++ b/Cronet/AndroidManifest.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.android.cronet"
+  android:versionCode="11"
+  android:versionName="R-initial">
+</manifest>