Ensure engine is initialized for all activity's

Ensure engine is initialized for all activity's in the browser. Monkey test
seems to launch individual activity and causes crash if engine is not
initialized.

Change-Id: I13706499262d9f7aeb2eb4c49be79cc26f1234a8
CR-Fixed:: SWE-6572
diff --git a/src/com/android/browser/DownloadSettings.java b/src/com/android/browser/DownloadSettings.java
index 05e7fe6..aa528d2 100644
--- a/src/com/android/browser/DownloadSettings.java
+++ b/src/com/android/browser/DownloadSettings.java
@@ -54,6 +54,7 @@
 import android.text.TextUtils;
 import android.content.pm.PackageManager;
 import android.Manifest.permission;
+import android.content.Context;
 
 import com.android.browser.reflect.ReflectHelper;
 
@@ -91,6 +92,10 @@
     private int nextRequestCode = 2000;
 
     protected void onCreate(Bundle savedInstanceState) {
+        if (!EngineInitializer.isInitialized()) {
+            Log.e(LOGTAG, "Engine not Initialized");
+            EngineInitializer.initializeSync((Context) getApplicationContext());
+        }
         super.onCreate(savedInstanceState);
         // initial the DownloadSettings view
         requestWindowFeature(Window.FEATURE_NO_TITLE);