SystemUI: Rework SearchPanelView calculations

Make isScreenLarge calculations match how the system calculates where to put the navigation
bar. This fixes certain cases where the quick launch buttons on the glowpad of the
navigation bar is improperly oriented.

Patch set 2: The eval should be greater OR EQUAL to 600, not just greater. Also cache result
into a boolean before returning it.

Patch set 3-4: Actually cache it this time.

Patch set 5-6: Make it final.

Change-Id: I5703578b4d49a6eeab100bb23167abd5cf9a326d
Update "[1/2] Base: DownloadManager: add support pause/resume/stop notifications"

We add pause and resume API here so that application can
pause and resume downloads manually by DownloadManager.
This contains two points:
1. add pause and resume download APIs.
2. add another paused reason for this download status.

Change-Id: I606b48ca20f43bcc6c119683818c2ab6ff03bfe5