IconPackHelper: Don't respect an icons original size if too large.

  - Otherwise, if an application isn't following app icon guidelines,
  it can create an OOM situation when creating the new icon based
  on the original resource's height and width.

Change-Id: I9430445da5e393cdbf76ed9ebd9698bf30df6a95
Merge "IconPackHelper: Don't respect an icons original size if too large." into du44