add developer setting for multiprocess webview

Change-Id: Ia6e7a1219b3324e9c8e8cee43f1c4d8cd217e725
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 5ab2b00..27277a7f 100755
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -6964,6 +6964,12 @@
          */
         public static final String WEBVIEW_PROVIDER = "webview_provider";
 
+        /**
+         * Developer setting to enable WebView multiprocess rendering.
+         * @hide
+         */
+        public static final String WEBVIEW_MULTIPROCESS = "webview_multiprocess";
+
        /**
         * Whether Wifi display is enabled/disabled
         * 0=disabled. 1=enabled.