[telemetry] Install PushAppsToBackground apk

telemetry/telemetry/core/android_platform.py

Index: telemetry/telemetry/core/android_platform.py
diff --git a/telemetry/telemetry/core/android_platform.py b/telemetry/telemetry/core/android_platform.py
index 8ddb9f2c1086f1acb67b3ab4571963d261db2deb..b2e7e84173adb7c39f3c28a84916292b0a3f60ff 100644
--- a/telemetry/telemetry/core/android_platform.py
+++ b/telemetry/telemetry/core/android_platform.py
@@ -15,6 +15,9 @@ class AndroidPlatform(platform.Platform):
     self._android_action_runner = android_action_runner.AndroidActionRunner(
         platform_backend)
 
+  def Initialize(self):
+    self._platform_backend.Initialize()
+
   @property
   def android_action_runner(self):
     return self._android_action_runner