Prepare to get the multiprocess setting from WebViewDelegate.

android_webview/glue/java/src/com/android/webview/chromium/WebViewDelegateFactory.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package com.android.webview.chromium;
 
 import android.annotation.TargetApi;
 import android.app.Application;
 import android.content.Context;
 import android.content.ContextWrapper;
@@ skipping 64 matching lines @@
         int getPackageId(Resources resources, String packageName);
 
         /** @see android.webkit.WebViewDelegate#getApplication */
         Application getApplication();
 
         /** @see android.webkit.WebViewDelegate#getErrorString */
         String getErrorString(Context context, int errorCode);
 
         /** @see android.webkit.WebViewDelegate#addWebViewAssetPath */
         void addWebViewAssetPath(Context context);
+
+        /** @see android.webkit.WebViewDelegate#isMultiProcessEnabled */
+        boolean isMultiProcessEnabled();
     }
 
     /**
      * Creates a {@link WebViewDelegate com.android.webview.chromium.WebViewDelegate} that proxies
      * requests to the given {@link android.webkit.WebViewDelegate android.webkit.WebViewDelegate}.
      *
      * @return the created delegate
      */
     static WebViewDelegate createProxyDelegate(android.webkit.WebViewDelegate delegate) {
         return new ProxyDelegate(delegate);
     }
 
     /**
      * Creates a {@link WebViewDelegate com.android.webview.chromium.WebViewDelegate} compatible
      * with the API 21 version of the framework in which
      * {@link android.webkit.WebViewDelegate android.webkit.WebViewDelegate} had not yet been
      * introduced.
      *
      * @return the created delegate
      */
     static WebViewDelegate createApi21CompatibilityDelegate() {
         return new Api21CompatibilityDelegate();
     }
 
     /**
      * A {@link WebViewDelegate com.android.webview.chromium.WebViewDelegate} that proxies requests
      * to a {@link android.webkit.WebViewDelegate android.webkit.WebViewDelegate}.
      */
-    private static class ProxyDelegate implements WebViewDelegate {
+    static class ProxyDelegate implements WebViewDelegate {
         android.webkit.WebViewDelegate mDelegate;
 
         ProxyDelegate(android.webkit.WebViewDelegate delegate) {
             mDelegate = delegate;
         }
 
         @Override
         public void setOnTraceEnabledChangeListener(final OnTraceEnabledChangeListener listener) {
             mDelegate.setOnTraceEnabledChangeListener(
                     new android.webkit.WebViewDelegate.OnTraceEnabledChangeListener() {
@@ skipping 67 matching lines @@
             // wrapper here here to avoid calling the getAssets()
             // proxy chain (which we cannot change because it is in
             // WebView framework code).
             mDelegate.addWebViewAssetPath(new ContextWrapper(context) {
                 @Override
                 public AssetManager getAssets() {
                     return getResources().getAssets();
                 }
             });
         }
+
+        @Override
+        public boolean isMultiProcessEnabled() {
+            throw new UnsupportedOperationException();
+        }
     }
 
     /**
      * A {@link WebViewDelegate com.android.webview.chromium.WebViewDelegate} compatible with the
      * API 21 version of the framework in which
      * {@link android.webkit.WebViewDelegate android.webkit.WebViewDelegate} had not yet been
      * introduced.
      *
      * <p>This class implements the
      * {@link WebViewDelegate com.android.webview.chromium.WebViewDelegate} functionality by using
@@ skipping 165 matching lines @@
             try {
                 PackageInfo info = (PackageInfo) mGetLoadedPackageInfoMethod.invoke(null);
                 // Avoid calling the ContextWrapper.getAssets() proxy
                 // chain, which can return an unexpected AssetManager.
                 mAddAssetPathMethod.invoke(
                         context.getResources().getAssets(), info.applicationInfo.sourceDir);
             } catch (Exception e) {
                 throw new RuntimeException("Invalid reflection", e);
             }
         }
+
+        @Override
+        public boolean isMultiProcessEnabled() {
+            throw new UnsupportedOperationException();
+        }
     }
 }