[Dominators] Rearrange access specifiers in DominatorTreeBase

Summary:
This patch makes DominatorTreeBase more readable by putting most important members on top of the class.

Before, the class looked like that: private -> protected (including data members) -> public -> protected.
The patch changes it to: protected (data members only) -> public -> protected -> public.

Reviewers: dberlin, sanjoy, chandlerc

Reviewed By: dberlin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D34527

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306714 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed