Explain what these are.

Change-Id: Ibb7b830c4216967a5877224c702ad4b3e1fe0b34
Method descriptions.

Change-Id: Iece61424e09fc36768889fde2c848ed2b0722701
Remove local variables that are no longer used.

Armin removed their uses in 120e469d176026ceb59abbf74d2ad255323cbc9a.

Change-Id: Id620466929ca3a66dd1c261e81aacd533a44cd76
Reduce scope level & Annotate the code a bit.

Change-Id: I6ebf849243000920b1c1f7e67d2dc81fcee9e16b
AdoptTextMinSize() calls NbcAdjustTextFrameWidthAndHeight() at the end.

No need to call this again in the caller.

Change-Id: Ib36853cf5a0720082275e0490b4443cd9e0bd007