Fix integer overflow during MP4 atom processing

A few sample table related FourCC values are handled by the
setSampleToChunkParams function. An integer overflow exists within this
function. Validate that mNumSampleToChunkOffets will not cause an integer
overflow.

Bug: 20139950

(cherry picked from commit c24607c29c96f939aed9e33bfa702b1dd79da4b7)

Change-Id: I49086952451b09a234d8b82669251ab9f1ef58d9
