Add a snapshot of flutter/engine/src/build to our sdk

build/android/pylib/instrumentation/test_package.py

Index: build/android/pylib/instrumentation/test_package.py
diff --git a/build/android/pylib/instrumentation/test_package.py b/build/android/pylib/instrumentation/test_package.py
new file mode 100644
index 0000000000000000000000000000000000000000..5be061d4af8fb1b3aa9814eed409a4385ca01071
--- /dev/null
+++ b/build/android/pylib/instrumentation/test_package.py
@@ -0,0 +1,44 @@
+# Copyright (c) 2013 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.
+
+"""Class representing instrumentation test apk and jar."""
+
+import os
+
+from pylib.instrumentation import test_jar
+from pylib.utils import apk_helper
+
+
+class TestPackage(test_jar.TestJar):
+  def __init__(self, apk_path, jar_path, test_support_apk_path):
+    test_jar.TestJar.__init__(self, jar_path)
+
+    if not os.path.exists(apk_path):
+      raise Exception('%s not found, please build it' % apk_path)
+    if test_support_apk_path and not os.path.exists(test_support_apk_path):
+      raise Exception('%s not found, please build it' % test_support_apk_path)
+    self._apk_path = apk_path
+    self._apk_name = os.path.splitext(os.path.basename(apk_path))[0]
+    self._package_name = apk_helper.GetPackageName(self._apk_path)
+    self._test_support_apk_path = test_support_apk_path
+
+  def GetApkPath(self):
+    """Returns the absolute path to the APK."""
+    return self._apk_path
+
+  def GetApkName(self):
+    """Returns the name of the apk without the suffix."""
+    return self._apk_name
+
+  def GetPackageName(self):
+    """Returns the package name of this APK."""
+    return self._package_name
+
+  # Override.
+  def Install(self, device):
+    device.Install(self.GetApkPath())
+    if (self._test_support_apk_path and
+        os.path.exists(self._test_support_apk_path)):
+      device.Install(self._test_support_apk_path)
+