Add SkMatrix44 constructor that allows user to control the initialization
method.  Preliminary results using Chromium's cc_perftests
show that we can avoid almost half of the default constructors from
redundantly/unnecessarily initializing the matrix to identity.

Review URL: https://codereview.appspot.com/6872056

git-svn-id: http://skia.googlecode.com/svn/trunk@6742 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed