Force multiprocess WebView to always be enabled.

Turn the setting on at boot, and ignore attempts to change it. For a
test build only.

Change-Id: I2a3c7a6681f635cfa839f6bad8f04bfe35e28f9a
diff --git a/services/core/java/com/android/server/webkit/WebViewUpdateServiceImpl.java b/services/core/java/com/android/server/webkit/WebViewUpdateServiceImpl.java
index edfb11c..bba7640 100644
--- a/services/core/java/com/android/server/webkit/WebViewUpdateServiceImpl.java
+++ b/services/core/java/com/android/server/webkit/WebViewUpdateServiceImpl.java
@@ -95,6 +95,7 @@
         updateFallbackStateOnBoot();
         mWebViewUpdater.prepareWebViewInSystemServer();
         mSystemInterface.notifyZygote(isMultiProcessEnabled());
+        mSystemInterface.setMultiProcessSetting(mContext, 1);
     }
 
     private boolean existsValidNonFallbackProvider(WebViewProviderInfo[] providers) {
@@ -242,16 +243,11 @@
     }
 
     boolean isMultiProcessEnabled() {
-        return mSystemInterface.getMultiProcessSetting(mContext) != 0;
+        return true;
     }
 
     void enableMultiProcess(boolean enable) {
-        PackageInfo current = getCurrentWebViewPackage();
-        mSystemInterface.setMultiProcessSetting(mContext, enable ? 1 : 0);
-        mSystemInterface.notifyZygote(enable);
-        if (current != null) {
-            mSystemInterface.killPackageDependents(current.packageName);
-        }
+        /* Ignore this */
     }
 
     /**