DownloadProvider: add to support pause/resume download by manual

This feature contains below points:
1. add to pause running download by manual.
2. add to resume manually paused download by manual.
3. add to show proper contents in notification and download-list
   for manually paused status.
4. add to support download breakpoint continuing when HTTP server
   doesn't contain etag in response header. Android baseline only
   supports this when etag is not null.
5. add to show proper contents in notification and download-list
   for status of waiting-for-network.

Change-Id: I433cdee2de8b3add0248bbb0a9d02f8da4e5bb38

1 files changed, 3 insertions, 0 deletions

diff --git a/src/com/android/providers/downloads/Constants.java b/src/com/android/providers/downloads/Constants.java
index 7b8fcd24..a10cb514 100644
--- a/src/com/android/providers/downloads/Constants.java
+++ b/src/com/android/providers/downloads/Constants.java
@@ -57,6 +57,9 @@ public class Constants {
     /** the intent that gets sent when deleting the notification of a completed download */
     public static final String ACTION_HIDE = "android.intent.action.DOWNLOAD_HIDE";
 
+    /** the intent that gets sent when choosing to resume the paused download */
+    public static final String ACTION_RESUME = "android.intent.action.DOWNLOAD_RESUME";
+
     /** The default base name for downloaded files if we can't get one at the HTTP level */
     public static final String DEFAULT_DL_FILENAME = "downloadfile";