Move platform abstraction to base library

test/cctest/test-macro-assembler-arm.cc

Index: test/cctest/test-macro-assembler-arm.cc
diff --git a/test/cctest/test-macro-assembler-arm.cc b/test/cctest/test-macro-assembler-arm.cc
index a4d103d1cf84c030962090dcefb91c6aa98ebcab..2cfad0df83591f5f0d29f7b127dd5c2555df2d4d 100644
--- a/test/cctest/test-macro-assembler-arm.cc
+++ b/test/cctest/test-macro-assembler-arm.cc
@@ -68,10 +68,12 @@ TEST(CopyBytes) {
   size_t act_size;
 
   // Allocate two blocks to copy data between.
-  byte* src_buffer = static_cast<byte*>(OS::Allocate(data_size, &act_size, 0));
+  byte* src_buffer =
+      static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
   CHECK(src_buffer);
   CHECK(act_size >= static_cast<size_t>(data_size));
-  byte* dest_buffer = static_cast<byte*>(OS::Allocate(data_size, &act_size, 0));
+  byte* dest_buffer =
+      static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
   CHECK(dest_buffer);
   CHECK(act_size >= static_cast<size_t>(data_size));
 
@@ -139,9 +141,8 @@ TEST(LoadAndStoreWithRepresentation) {
 
   // Allocate an executable page of memory.
   size_t actual_size;
-  byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
-                                                 &actual_size,
-                                                 true));
+  byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
+      Assembler::kMinimalBufferSize, &actual_size, true));
   CHECK(buffer);
   Isolate* isolate = CcTest::i_isolate();
   HandleScope handles(isolate);