Rename com.squareup.okhttp to okhttp3

Maven group changes will come in follow up.

okhttp-android-support/src/main/java/okhttp3/AndroidInternal.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Square, Inc.
+ *
+ * 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.
+ */
+package okhttp3;
+
+import okhttp3.internal.huc.CacheAdapter;
+
+import java.net.ResponseCache;
+
+/**
+ * Back doors to enable the use of OkHttp within the Android platform libraries. OkHttp is used to
+ * provide the default {@link java.net.HttpURLConnection} / {@link javax.net.ssl.HttpsURLConnection}
+ * implementation including support for a custom {@link ResponseCache}.
+ */
+public class AndroidInternal {
+
+  private AndroidInternal() {
+  }
+
+  /** Sets the response cache to be used to read and write cached responses. */
+  public static void setResponseCache(OkUrlFactory okUrlFactory, ResponseCache responseCache) {
+    OkHttpClient client = okUrlFactory.client();
+    if (responseCache instanceof OkCacheContainer) {
+      // Avoid adding layers of wrappers. Rather than wrap the ResponseCache in yet another layer to
+      // make the ResponseCache look like an InternalCache, we can unwrap the Cache instead.
+      // This means that Cache stats will be correctly updated.
+      OkCacheContainer okCacheContainer = (OkCacheContainer) responseCache;
+      client.setCache(okCacheContainer.getCache());
+    } else {
+      client.setInternalCache(responseCache != null ? new CacheAdapter(responseCache) : null);
+    }
+  }
+}