AOSP/DeskClock - Added SET_ALARM permission check

Added SET_ALARM permission check for the HandleApiCalls activity.

BUG: 150612638

Test: manual - tested the DeskClock UI manually, as well as testing the
alarm, stopwatch and timer

Forrest run: go/forrest-run/L31100000555861022 to test CtsMediaTestCases module

Change-Id: I9e42e0bc3eb1375d170091ec79315967be1efd32
Merged-In: I9e42e0bc3eb1375d170091ec79315967be1efd32
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 487361e..e6fc18d 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -104,6 +104,7 @@
 
         <activity
             android:name=".HandleApiCalls"
+            android:permission="com.android.alarm.permission.SET_ALARM"
             android:excludeFromRecents="true"
             android:launchMode="singleInstance"
             android:taskAffinity=""