Move platform abstraction to base library

src/base/platform/platform-openbsd.cc

Index: src/base/platform/platform-openbsd.cc
diff --git a/src/platform-openbsd.cc b/src/base/platform/platform-openbsd.cc
similarity index 98%
rename from src/platform-openbsd.cc
rename to src/base/platform/platform-openbsd.cc
index c29ebde033d82685ba48e7b82fa033f43f39bd43..8458065852f54f854bf45a274e52a81440b5ab19 100644
--- a/src/platform-openbsd.cc
+++ b/src/base/platform/platform-openbsd.cc
@@ -27,12 +27,12 @@
 
 #undef MAP_TYPE
 
-#include "src/platform.h"
-#include "src/utils.h"
+#include "src/base/macros.h"
+#include "src/base/platform/platform.h"
 
 
 namespace v8 {
-namespace internal {
+namespace base {
 
 
 const char* OS::LocalTimezone(double time, TimezoneCache* cache) {
@@ -335,4 +335,4 @@ bool VirtualMemory::HasLazyCommits() {
   return false;
 }
 
-} }  // namespace v8::internal
+} }  // namespace v8::base