Upstream: Renderers are running in WebAPKs.

chrome/android/webapk/shell_apk/AndroidManifest.xml

Index: chrome/android/webapk/shell_apk/AndroidManifest.xml
diff --git a/chrome/android/webapk/shell_apk/AndroidManifest.xml b/chrome/android/webapk/shell_apk/AndroidManifest.xml
index 4fd67d74a7dae20eb21515c37ba8e2eaf508ff2d..921895d4ceb991eb0c8f8aed974808385a6acb8f 100644
--- a/chrome/android/webapk/shell_apk/AndroidManifest.xml
+++ b/chrome/android/webapk/shell_apk/AndroidManifest.xml
@@ -42,5 +42,22 @@
               <category android:name="android.intent.category.WEBAPK_API" />
             </intent-filter>
         </service>
+        <meta-data android:name="org.chromium.content.browser.NUM_SANDBOXED_SERVICES"
+            android:value="3"/>
+        <service android:name="org.chromium.webapk.lib.common.WebApkSandboxedProcessService0"
+            android:isolatedProcess="true"
+            android:process=":webapk_sandboxed_process0"
+            android:exported="true"
+            tools:ignore="ExportedService"/>
+        <service android:name="org.chromium.webapk.lib.common.WebApkSandboxedProcessService1"
+            android:isolatedProcess="true"
+            android:process=":webapk_sandboxed_process1"
+            android:exported="true"
+            tools:ignore="ExportedService"/>
+        <service android:name="org.chromium.webapk.lib.common.WebApkSandboxedProcessService2"
+            android:isolatedProcess="true"
+            android:process=":webapk_sandboxed_process2"
+            android:exported="true"
+            tools:ignore="ExportedService"/>
     </application>
 </manifest>