DownloadProvider: Create and implement DialogDismissListener.

  - Better way to dismiss a host activity then explicitly calling
  getActivity() finish().

Change-Id: I121fb63d2d57c6c4b22abac2389d5c3d5ccad6e4

Conflicts:
	ui/src/com/android/providers/downloads/ui/TrampolineActivity.java
DownloadProvider: Check if the device actually supports second storage.

Change-Id: I78297ca235e058aecfd0ff5a0e990fc3004b4c77
DownloadProvider: Use an alert icon for downloads that have an error status.

Change-Id: If6d0f021cada1a09855009ab3276aa46bec74cfe

Conflicts:
	src/com/android/providers/downloads/DownloadNotifier.java
Automatic translation import

Change-Id: Icc93454edf18c58289062b577da376c3b7884bc9