Merge pull request firebase#512 from firebase/revan-test-fix

Extend UIAutomator timeouts.

Author: revan

firestore/app/src/androidTest/java/com/google/firebase/example/fireeats/MainActivityTest.java

@@ -42,7 +42,7 @@
       new ActivityTestRule<>(MainActivity.class, false, false);
 
   UiDevice device;
-  final long TIMEOUT = 30000;
+  final long TIMEOUT = 300000;  // Five minute timeout because our CI is slooow.
 
   @Before public void before() {
     // Sign out of any existing sessions