Go ahead and get rid of the old page size interface and convert all the
users over to the new one. No sense maintaining this "compatibility"
layer it seems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171331 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/MemoryTest.cpp b/unittests/Support/MemoryTest.cpp
index 4164713..fae67a8 100644
--- a/unittests/Support/MemoryTest.cpp
+++ b/unittests/Support/MemoryTest.cpp
@@ -21,7 +21,7 @@
 public:
   MappedMemoryTest() {
     Flags = GetParam();
-    PageSize = sys::Process::GetPageSize();
+    PageSize = sys::process::get_self()->page_size();
   }
 
 protected: