Upstream: ChildProcessLauncher connects renderer processes of WebAPKs.

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabsConnection.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabsConnection.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabsConnection.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabsConnection.java
index 25787c3db14f66ce3bbf398ffa3cc0bc0f6b7edc..fd39073a4f3f7ad1a2b04878287f90d8b37be10d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabsConnection.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabsConnection.java
@@ -50,6 +50,7 @@ import org.chromium.chrome.browser.prerender.ExternalPrerenderHandler;
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.util.IntentUtils;
 import org.chromium.chrome.browser.util.UrlUtilities;
+import org.chromium.content.browser.ChildProcessCreationParams;
 import org.chromium.content.browser.ChildProcessLauncher;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
@@ -178,10 +179,11 @@ public class CustomTabsConnection extends ICustomTabsService.Stub {
         }
         final Context context = app.getApplicationContext();
         final ChromeApplication chrome = (ChromeApplication) context;
+        ChildProcessCreationParams.set(chrome.getChildProcessCreationParams());
         new AsyncTask<Void, Void, Void>() {
             @Override
             protected Void doInBackground(Void... params) {
-                ChildProcessLauncher.warmUp(context, chrome.getChildProcessCreationParams());
+                ChildProcessLauncher.warmUp(context);
                 return null;
             }
         }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);