Update gc branch to bleeding_edge revision 8862.

src/platform-win32.cc

Index: src/platform-win32.cc
diff --git a/src/platform-win32.cc b/src/platform-win32.cc
index 4fc90025d3d69c207b1706ef4f0ddccb70e8392a..c441b96ce48fedfab29d49a4f0c8d0d157e4bf57 100644
--- a/src/platform-win32.cc
+++ b/src/platform-win32.cc
@@ -957,6 +957,12 @@ void OS::Free(void* address, const size_t size) {
 }
 
 
+void OS::ProtectCode(void* address, const size_t size) {
+  DWORD old_protect;
+  VirtualProtect(address, size, PAGE_EXECUTE_READ, &old_protect);
+}
+
+
 void OS::Guard(void* address, const size_t size) {
   DWORD oldprotect;
   VirtualProtect(address, size, PAGE_READONLY | PAGE_GUARD, &oldprotect);