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/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index cb587d5..65b4332 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -187,7 +187,7 @@
     : MemoryBufferMem(Buffer, RequiresNullTerminator) { }
 
   ~MemoryBufferMMapFile() {
-    static int PageSize = sys::Process::GetPageSize();
+    static int PageSize = sys::process::get_self()->page_size();
 
     uintptr_t Start = reinterpret_cast<uintptr_t>(getBufferStart());
     size_t Size = getBufferSize();
@@ -309,7 +309,7 @@
                                      uint64_t FileSize, uint64_t MapSize,
                                      int64_t Offset,
                                      bool RequiresNullTerminator) {
-  static int PageSize = sys::Process::GetPageSize();
+  static int PageSize = sys::process::get_self()->page_size();
 
   // Default is to map the full file.
   if (MapSize == uint64_t(-1)) {