Hold a reference to any kind of context in WindowAndroid.

android_webview/java/src/org/chromium/android_webview/AwContents.java

 // Copyright 2012 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 org.chromium.android_webview;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ComponentCallbacks2;
 import android.content.Context;
@@ skipping 888 matching lines @@
     private static WeakHashMap<Activity, WindowAndroidWrapper> sActivityWindowMap;
 
     // getWindowAndroid is only called on UI thread, so there are no threading issues with lazy
     // initialization.
     @SuppressFBWarnings("LI_LAZY_INIT_STATIC")
     private static WindowAndroidWrapper getWindowAndroid(Context context) {
         // TODO(boliu): WebView does not currently initialize ApplicationStatus, crbug.com/470582.
         Activity activity = ContentViewCore.activityFromContext(context);
         if (activity == null) {
             if (sCachedWindowAndroid == null) {
-                sCachedWindowAndroid = new WindowAndroidWrapper(
-                        new WindowAndroid(context.getApplicationContext()));
+                sCachedWindowAndroid = new WindowAndroidWrapper(new WindowAndroid(context));
             }
             return sCachedWindowAndroid;
         }
 
         if (sActivityWindowMap == null) sActivityWindowMap = new WeakHashMap<>();
         WindowAndroidWrapper activityWindowAndroid = sActivityWindowMap.get(activity);
         if (activityWindowAndroid == null) {
             final boolean listenToActivityState = false;
             activityWindowAndroid = new WindowAndroidWrapper(
                     new ActivityWindowAndroid(activity, listenToActivityState));
@@ skipping 2258 matching lines @@
     private native void nativePreauthorizePermission(long nativeAwContents, String origin,
             long resources);
 
     private native void nativePostMessageToFrame(long nativeAwContents, String frameId,
             String message, String targetOrigin, int[] msgPorts);
 
     private native void nativeCreateMessageChannel(long nativeAwContents, AwMessagePort[] ports);
 
     private native void nativeGrantFileSchemeAccesstoChildProcess(long nativeAwContents);
 }