Cleanup Registry API part 2:

base/registry.h

Index: base/registry.h
diff --git a/base/registry.h b/base/registry.h
index a9a6997251176643620730a23bdbaca1dd9f221d..4702a786c9d2c8ecad067043e3e07f05b8a8b5ad 100644
--- a/base/registry.h
+++ b/base/registry.h
@@ -22,12 +22,12 @@ class RegKey {
  public:
   RegKey(HKEY rootkey = NULL, const wchar_t* subkey = NULL,
          REGSAM access = KEY_READ);
-  ~RegKey() { Close(); }
+  ~RegKey();
 
   bool Create(HKEY rootkey, const wchar_t* subkey, REGSAM access = KEY_READ);
 
   bool CreateWithDisposition(HKEY rootkey, const wchar_t* subkey,
-                             DWORD* disposition, REGSAM access = KEY_READ);
+                             DWORD* disposition, REGSAM access);
 
   bool Open(HKEY rootkey, const wchar_t* subkey, REGSAM access = KEY_READ);