Enable WAL mode using new API, which is more efficient.

Bug: 6124556
Change-Id: I49b6ba6706878d0e78d8457cde7cb9055663bfe0
diff --git a/src/com/android/browser/provider/BrowserProvider2.java b/src/com/android/browser/provider/BrowserProvider2.java
index 8d71266..6121abc 100644
--- a/src/com/android/browser/provider/BrowserProvider2.java
+++ b/src/com/android/browser/provider/BrowserProvider2.java
@@ -386,6 +386,7 @@
         static final int DATABASE_VERSION = 32;
         public DatabaseHelper(Context context) {
             super(context, DATABASE_NAME, null, DATABASE_VERSION);
+            setWriteAheadLoggingEnabled(true);
         }
 
         @Override
@@ -624,7 +625,6 @@
         }
 
         public void onOpen(SQLiteDatabase db) {
-            db.enableWriteAheadLogging();
             mSyncHelper.onDatabaseOpened(db);
         }