Move platform abstraction to base library

test/cctest/test-serialize.cc

Index: test/cctest/test-serialize.cc
diff --git a/test/cctest/test-serialize.cc b/test/cctest/test-serialize.cc
index c508de2f7bd8240b1977eb804e044574ee597a66..c29f51fc1ae99286888f31d2f5e95a4fccfcd796 100644
--- a/test/cctest/test-serialize.cc
+++ b/test/cctest/test-serialize.cc
@@ -165,7 +165,7 @@ TEST(ExternalReferenceDecoder) {
 class FileByteSink : public SnapshotByteSink {
  public:
   explicit FileByteSink(const char* snapshot_file) {
-    fp_ = OS::FOpen(snapshot_file, "wb");
+    fp_ = v8::base::OS::FOpen(snapshot_file, "wb");
     file_name_ = snapshot_file;
     if (fp_ == NULL) {
       PrintF("Unable to write to snapshot file \"%s\"\n", snapshot_file);
@@ -211,7 +211,7 @@ void FileByteSink::WriteSpaceUsed(
   int file_name_length = StrLength(file_name_) + 10;
   Vector<char> name = Vector<char>::New(file_name_length + 1);
   SNPrintF(name, "%s.size", file_name_);
-  FILE* fp = OS::FOpen(name.start(), "w");
+  FILE* fp = v8::base::OS::FOpen(name.start(), "w");
   name.Dispose();
   fprintf(fp, "new %d\n", new_space_used);
   fprintf(fp, "pointer %d\n", pointer_space_used);
@@ -289,7 +289,7 @@ static void ReserveSpaceForSnapshot(Deserializer* deserializer,
   int file_name_length = StrLength(file_name) + 10;
   Vector<char> name = Vector<char>::New(file_name_length + 1);
   SNPrintF(name, "%s.size", file_name);
-  FILE* fp = OS::FOpen(name.start(), "r");
+  FILE* fp = v8::base::OS::FOpen(name.start(), "r");
   name.Dispose();
   int new_size, pointer_size, data_size, code_size, map_size, cell_size,
       property_cell_size;