Introduce background Download process to android

content/public/android/java/src/org/chromium/content/browser/ChildProcessConstants.java

Index: content/public/android/java/src/org/chromium/content/browser/ChildProcessConstants.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ChildProcessConstants.java b/content/public/android/java/src/org/chromium/content/browser/ChildProcessConstants.java
index d4eb121258264ad0c581635fab11a271afc1355f..03e242a488d65dfcdbc52f5ff056abd95de6184d 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ChildProcessConstants.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ChildProcessConstants.java
@@ -19,4 +19,14 @@ public class ChildProcessConstants {
     // Used to pass the CPU features mask to child processes.
     public static final String EXTRA_CPU_FEATURES =
             "com.google.android.apps.chrome.extra.cpu_features";
+
+    // An unique ID for DownloadProcessService to post a foreground notifications, 1797 is the year
+    // the element chromium was discovered.
+    public static final int DOWNLOAD_PROCESS_NOTIFICATION_ID = 1797;

[no sievers, 2016/02/03 22:46:52]

Can you put this into chromium//src/chrome/android/java/res/values/ids.xml where
all the other notification ids for startForegorund() are and then use
|R.id.download_process_notification| here?

[qinmin, 2016/02/03 23:37:36]

This is in content, so I added a new ids.xml under content.

+    // Used to pass the IChildProcessCallback to a child process. For a started service,
+    // file descriptors cannot be passed in the intent that starts the service. As a result,
+    // a Binder object needs to be passed through which the child process can retrieve the file
+    // descriptors.
+    public static final String EXTRA_CHILD_PROCESS_CALLBACK =
+            "com.google.android.apps.chrome.extra.child_process_callback";
 }