pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/thirdparty/com/squareup/picasso/PicassoExecutorService.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2013 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 com.squareup.picasso;
+
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.telephony.TelephonyManager;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * The default {@link java.util.concurrent.ExecutorService} used for new {@link Picasso} instances.
+ * <p/>
+ * Exists as a custom type so that we can differentiate the use of defaults versus a user-supplied
+ * instance.
+ */
+class PicassoExecutorService extends ThreadPoolExecutor {
+  private static final int DEFAULT_THREAD_COUNT = 3;
+
+  PicassoExecutorService() {
+    super(DEFAULT_THREAD_COUNT, DEFAULT_THREAD_COUNT, 0, TimeUnit.MILLISECONDS,
+        new LinkedBlockingQueue<Runnable>(), new Utils.PicassoThreadFactory());
+  }
+
+  void adjustThreadCount(NetworkInfo info) {
+    if (info == null || !info.isConnectedOrConnecting()) {
+      setThreadCount(DEFAULT_THREAD_COUNT);
+      return;
+    }
+    switch (info.getType()) {
+      case ConnectivityManager.TYPE_WIFI:
+      case ConnectivityManager.TYPE_WIMAX:
+      case ConnectivityManager.TYPE_ETHERNET:
+        setThreadCount(4);
+        break;
+      case ConnectivityManager.TYPE_MOBILE:
+        switch (info.getSubtype()) {
+          case TelephonyManager.NETWORK_TYPE_LTE:  // 4G
+          case TelephonyManager.NETWORK_TYPE_HSPAP:
+          case TelephonyManager.NETWORK_TYPE_EHRPD:
+            setThreadCount(3);
+            break;
+          case TelephonyManager.NETWORK_TYPE_UMTS: // 3G
+          case TelephonyManager.NETWORK_TYPE_CDMA:
+          case TelephonyManager.NETWORK_TYPE_EVDO_0:
+          case TelephonyManager.NETWORK_TYPE_EVDO_A:
+          case TelephonyManager.NETWORK_TYPE_EVDO_B:
+            setThreadCount(2);
+            break;
+          case TelephonyManager.NETWORK_TYPE_GPRS: // 2G
+          case TelephonyManager.NETWORK_TYPE_EDGE:
+            setThreadCount(1);
+            break;
+          default:
+            setThreadCount(DEFAULT_THREAD_COUNT);
+        }
+        break;
+      default:
+        setThreadCount(DEFAULT_THREAD_COUNT);
+    }
+  }
+
+  private void setThreadCount(int threadCount) {
+    setCorePoolSize(threadCount);
+    setMaximumPoolSize(threadCount);
+  }
+}