Merge "Pinned stack animation: Correct scaling calculations."

            task.mStack.getDimBounds(mTmpStackBounds);

            // We want to calculate the scaling based on the content area, not based on

            // the entire surface, so that we scale in sync with windows that don't have insets.

            mExtraHScale = (mTmpStackBounds.width() - hInsets) / (float)(surfaceWidth - hInsets);

            mExtraVScale = (mTmpStackBounds.height() - vInsets) / (float)(surfaceHeight - vInsets);

            mExtraHScale = mTmpStackBounds.width() / (float)(surfaceWidth - hInsets);

            mExtraVScale = mTmpStackBounds.height() / (float)(surfaceHeight - vInsets);

            // In the case of ForceScaleToStack we scale entire tasks together,

            // and so we need to scale our offsets relative to the task bounds