Feed back to the ServiceTabLauncher when the tab has been created.

chrome/android/java/src/org/chromium/chrome/browser/ServiceTabLauncher.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser;
 
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.util.Log;
 
 import org.chromium.base.CalledByNative;
+import org.chromium.content_public.browser.WebContents;
 
 /**
  * Tab Launcher to be used to launch new tabs from background Android Services, when it is not
  * known whether an activity is available. It will send an intent to launch the activity.
  *
  * TODO(peter): Have the activity confirm that the tab has been launched.
  */
 public abstract class ServiceTabLauncher {
     private static final String TAG = ServiceTabLauncher.class.getSimpleName();
     private static final String SERVICE_TAB_LAUNCHER_KEY =
             "org.chromium.chrome.browser.SERVICE_TAB_LAUNCHER";
 
+    // Name of the extra containing the Id of a tab launch request id.
+    public static final String LAUNCH_REQUEST_ID_EXTRA =
+            "org.chromium.chrome.browser.ServiceTabLauncher.LAUNCH_REQUEST_ID";
+
     private static ServiceTabLauncher sInstance;
 
     /**
      * Launches the browser activity and launches a tab for |url|.
      *
      * @param context The context using which the URL is being loaded.
      * @param requestId Id of the request for launching this tab.
      * @param incognito Whether the tab should be launched in incognito mode.
      * @param url The URL which should be launched in a tab.
      * @param disposition The disposition requested by the navigation source.
@@ skipping 45 matching lines @@
 
             return Class.forName(className);
         } catch (NameNotFoundException e) {
             Log.e(TAG, "Context.getPackage() refers to an invalid package name.");
         } catch (ClassNotFoundException e) {
             Log.e(TAG, "Invalid value for SERVICE_TAB_LAUNCHER in the Android manifest file.");
         }
 
         return null;
     }
+
+    /**
+     * To be called by the activity when the WebContents for |requestId| has been created, or has
+     * been recycled from previous use. The |webContents| must not yet have started provisional
+     * load for the main frame.
+     *
+     * @param requestId Id of the tab launching request which has been fulfilled.
+     * @param webContents The WebContents instance associated with this request.
+     */
+    public static void onWebContentsForRequestAvailable(int requestId, WebContents webContents) {
+        nativeOnWebContentsForRequestAvailable(requestId, webContents);
+    }
+
+    private static native void nativeOnWebContentsForRequestAvailable(
+            int requestId, WebContents webContents);
 }