Upstream: Renderers are running in WebAPKs.

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 7451339ceffe6380806654b5633e306eca19baee..929de692774897865ec4a3a1b9699f0d5686d137 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
@@ -21,6 +21,7 @@ import org.chromium.content.browser.ChildProcessCreationParams;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.ui.base.PageTransition;
 import org.chromium.webapk.lib.client.WebApkServiceConnectionManager;
+import org.chromium.webapk.lib.common.WebApkSandboxedProcessService;
 
 /**
  * An Activity is designed for WebAPKs (native Android apps) and displays a webapp in a nearly
@@ -130,7 +131,8 @@ public class WebApkActivity extends WebappActivity {
         if (isForWebApk) {
             int extraBindFlag = params == null ? 0 : params.getExtraBindFlags();
             params = new ChildProcessCreationParams(getWebappInfo().webApkPackageName(),
-                    extraBindFlag, LibraryProcessType.PROCESS_CHILD);
+                    extraBindFlag, LibraryProcessType.PROCESS_CHILD,
+                    WebApkSandboxedProcessService.class);
         }
         ChildProcessCreationParams.set(params);
     }