enable plugins to launch an activity within the browser

Change-Id: Ife459b2d248a2ce0c0a4de3f69b74c86ee472266
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index a355610..cee3573 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -183,6 +183,11 @@
         <!-- Makes .BrowserActivity the search target for any activity in Browser -->
         <meta-data android:name="android.app.default_searchable" android:value=".BrowserActivity" />
 
+        <activity android:name="android.webkit.PluginActivity">
+            <intent-filter>
+                <action android:name="android.intent.webkit.PLUGIN" />
+            </intent-filter>
+        </activity>
 
     </application>