Let WebRTC notification not show "touch to return" in custom tab

chrome/android/java/src/org/chromium/chrome/browser/media/MediaCaptureNotificationService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/media/MediaCaptureNotificationService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/media/MediaCaptureNotificationService.java b/chrome/android/java/src/org/chromium/chrome/browser/media/MediaCaptureNotificationService.java
index 1fcc1750d2aefbecc8b24ca0720e72c16e3b016f..344de2d9d3105173b7121b37b60390a0b10c89cc 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/media/MediaCaptureNotificationService.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/media/MediaCaptureNotificationService.java
@@ -159,24 +159,26 @@ public class MediaCaptureNotificationService extends Service {
             notificationIconId = R.drawable.webrtc_audio;
         }
 
-        String contentText = mContext.getResources().getString(notificationContentTextId) + ". "
-                + mContext.getResources().getString(
-                        R.string.media_notification_link_text, url);
-
         NotificationCompat.Builder builder = new NotificationCompat.Builder(mContext)
                 .setAutoCancel(false)
                 .setOngoing(true)
                 .setContentTitle(mContext.getString(R.string.app_name))
-                .setContentText(contentText)
                 .setSmallIcon(notificationIconId)
                 .setLocalOnly(true);
 
+        StringBuilder contentText = new StringBuilder(
+                mContext.getResources().getString(notificationContentTextId)).append('.');
         Intent tabIntent = Tab.createBringTabToFrontIntent(notificationId);
         if (tabIntent != null) {
             PendingIntent contentIntent = PendingIntent.getActivity(
                     mContext, notificationId, tabIntent, 0);
             builder.setContentIntent(contentIntent);
+            contentText.append(url);
+        } else {
+            contentText.append(
+                    mContext.getResources().getString(R.string.media_notification_link_text, url));
         }
+        builder.setContentText(contentText);
 
         Notification notification = new NotificationCompat.BigTextStyle(builder)
                 .bigText(contentText).build();