Rename SkMatrix::get(Max|Min)Stretch to get(Min|Max)Scale

R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/295713002

git-svn-id: http://skia.googlecode.com/svn/trunk@14798 2bbb7eff-a529-9590-31e7-b0007b416f81
7 files changed