Add a class to check the send result in Google Maps, Docs and Fusion Tables.

Change the code to give an activity to each track.
Change the way to initialize the static fields in EndToEndTestUtils.

SignalStrengthSamplerTest/project.properties

@@ -0,0 +1,11 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system use,
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+
+# Project target.
+target=android-15