am d82bc515: Avoid the rounding error, as Math.round(Math.round(viewWidth * mInvActualScale) * mActualScale) not necessary to be viewWidth, we special case when the content exactly fit in the view case.

Merge commit 'd82bc5158c764bdd30b7d22f32258ad3c2c0c0f6' into eclair-plus-aosp

* commit 'd82bc5158c764bdd30b7d22f32258ad3c2c0c0f6':
  Avoid the rounding error, as Math.round(Math.round(viewWidth * mInvActualScale) * mActualScale) not necessary to be viewWidth, we special case when the content exactly fit in the view case.