[Android] Stop hiding the RWHV layer subtree when hiding the widget

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

Index: android_webview/java/src/org/chromium/android_webview/AwContents.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContents.java b/android_webview/java/src/org/chromium/android_webview/AwContents.java
index 4a97cab364ca63bdccb5c33181ec2a7d5728df4f..0a0e8530776bffcb7df689bea0ff2b19e862f171 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -871,9 +871,11 @@ public class AwContents implements SmartClipProvider,
 
         WebContents webContents = nativeGetWebContents(mNativeAwContents);
 
+        // WebView does not currently initialize ApplicationStatus, crbug.com/470582.
+        final boolean listenToActivityState = false;
         Activity activity = ContentViewCore.activityFromContext(mContext);
         mWindowAndroid = activity != null
-                ? new ActivityWindowAndroid(activity)
+                ? new ActivityWindowAndroid(activity, listenToActivityState)
                 : new WindowAndroid(mContext.getApplicationContext());
         mContentViewCore = createAndInitializeContentViewCore(
                 mContainerView, mContext, mInternalAccessAdapter, webContents,