Allow autoplay unmuted for WebAPK in the manifest scope

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
index a4b1c4276db161ed389687cfcff0c706c85461dc..360b52624cac92b4f4021ac8f1d2fbdeca45270c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
@@ -47,6 +47,9 @@ public class WebApkActivity extends WebappActivity {
             getActivityTab().loadUrl(
                     new LoadUrlParams(overrideUrl, PageTransition.AUTO_TOPLEVEL));
         }
+        if (isInitialized()) {
+            getActivityTab().setWebappManifestScope(mWebappInfo.scopeUri().toString());
+        }
     }
 
     @Override
@@ -117,6 +120,13 @@ public class WebApkActivity extends WebappActivity {
     }
 
     @Override
+    public void finishNativeInitialization() {
+        super.finishNativeInitialization();
+        if (!isInitialized()) return;
+        getActivityTab().setWebappManifestScope(mWebappInfo.scopeUri().toString());
+    }
+
+    @Override
     public void onStop() {
         super.onStop();
         WebApkServiceConnectionManager.getInstance().disconnect(