Use write_buffer_to_statsd within StatsLog_write

This CL is a partial cherrypick of ag/9686088. This is needed because new
changes to libstatssocket (that need to be cherrypicked into AOSP) wrap
#write_to_statsd() with #write_buffer_to_statsd().

Bug: 143978873
Test: m -j
Test: flashes successfully
Test: DocumentsUI(a Mainline module) is able to successfully log to statsd
Change-Id: I886331f728ccaa3d281b5683eb89179aa73596b6
Merged-In: I9cdc6151d8feb29a712532e50f143af9d52c8d94

core/java/android/util/StatsLog.java

@@ -224,12 +224,25 @@ public final class StatsLog extends StatsLogInternal {
     /**
      * Write an event to stats log using the raw format.
      *
-     * @param buffer    The encoded buffer of data to write..
+     * @param buffer    The encoded buffer of data to write.
      * @param size      The number of bytes from the buffer to write.
      * @hide
      */
+    // TODO(b/144935988): Mark deprecated.
     @SystemApi
-    public static native void writeRaw(@NonNull byte[] buffer, int size);
+    public static void writeRaw(@NonNull byte[] buffer, int size) {
+        // TODO(b/144935988): make this no-op once clients have migrated to StatsEvent.
+        writeImpl(buffer, size, 0);
+    }
+
+    /**
+     * Write an event to stats log using the raw format.
+     *
+     * @param buffer    The encoded buffer of data to write.
+     * @param size      The number of bytes from the buffer to write.
+     * @param atomId    The id of the atom to which the event belongs.
+     */
+    private static native void writeImpl(@NonNull byte[] buffer, int size, int atomId);
 
     private static void enforceDumpCallingPermission(Context context) {
         context.enforceCallingPermission(android.Manifest.permission.DUMP, "Need DUMP permission.");