Move Call Log backup into it's own package.

Moves the call log backup from the contacts provider into it's own
package.  This should make it easier to support backup through the same
package name for OEMs which revise (and rename) the contacts provider.

Also add a CallLogChangeReceiver to receive notices from the
CallLogProvider when the call log changes.  When this happens, the
receiver notifies the backup manager that it should run a backup at it's
earliest convenience.

Change-Id: I5774bba333a83adf53e1733f80a3df9e8140adb8
diff --git a/src/com/android/providers/calllogbackup/CallLogChangeReceiver.java b/src/com/android/providers/calllogbackup/CallLogChangeReceiver.java
new file mode 100644
index 0000000..dbd7b00
--- /dev/null
+++ b/src/com/android/providers/calllogbackup/CallLogChangeReceiver.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.providers.calllogbackup;
+
+import android.app.backup.BackupManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+/**
+ * Call Log Change Broadcast Receiver. Receives an intent when the call log provider changes
+ * so that it triggers backup accordingly.
+ */
+public class CallLogChangeReceiver extends BroadcastReceiver {
+
+    private static final String ACTION_CALL_LOG_CHANGE = "android.intent.action.CALL_LOG_CHANGE";
+
+    /** ${inheritDoc} */
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (ACTION_CALL_LOG_CHANGE.equals(intent.getAction())) {
+            BackupManager bm = new BackupManager(context);
+            bm.dataChanged();
+        }
+    }
+
+}