Move SharedPreferenceLogger to instrumentation package.

Bug: 30914916
Test: SettingsUnitTests and RunSettingsRoboTests

- Added interface to abstract logger
- Added test for SharePrefLogger
- Moved Existing tests for instrumentation to robotests.

Change-Id: I2b431ea4b0fd09d0f11389d8b9181448f08a52c5

src/com/android/settings/SettingsActivity.java

@@ -71,6 +71,7 @@ import com.android.settings.applications.UsageAccessDetails;
 import com.android.settings.applications.VrListenerSettings;
 import com.android.settings.applications.WriteSettingsDetails;
 import com.android.settings.bluetooth.BluetoothSettings;
+import com.android.settings.core.instrumentation.SharedPreferencesLogger;
 import com.android.settings.dashboard.DashboardContainerFragment;
 import com.android.settings.dashboard.SearchResultsSummary;
 import com.android.settings.datausage.DataUsageSummary;