Removing extraneous calls.

- Removing calls to ensureCapacity, which was causing reallocations when
  using a temporary set with multiple uses.
- Fixing issue with update callback not being called when immediately 
  updating a TaskView’s transform
- Adding utility methods in preparation for refactoring code


Change-Id: If62c3751ed6af15092a34435df08bb4d627536ea
11 files changed