Comment 2 for bug 1364964

Adding affects indicator-transfer since it will be the first consumer of this metadata.

The main pieces of information that would help indicator-transfer are:

1. A flag to denote whether this download should be shown in the indicator at all; e.g. MMS messages should never be shown. Possible key name: ShowInIndicator

2. A human-readable title. Design's mockups use title examples of "Top 10 animation films", "Sunny day at the beach", Sunny day at the beach 2", but use your best judgement -- if that level of metainfo isn't available, even a basename of the file we're downloading would be better than nothing. Possible key name: Title

3. If the download is going to be consumed by a click app, the name of that app. indicator-transfer needs this for (a) extracting its icon for the menuitem and (b) to know what app to launch when the user clicks on a completed download in the indicator's menu. Possible key name: ClickPackage