Fix misuses of DISALLOW_IMPLICIT_CONSTRUCTORS()

content/common/sandbox_linux/sandbox_linux.h

Index: content/common/sandbox_linux/sandbox_linux.h
diff --git a/content/common/sandbox_linux/sandbox_linux.h b/content/common/sandbox_linux/sandbox_linux.h
index 4f0a680d79eacf6e6481f0900851f520968ec323..8ff42dfc885302dded01e24d1f31f167dc794661 100644
--- a/content/common/sandbox_linux/sandbox_linux.h
+++ b/content/common/sandbox_linux/sandbox_linux.h
@@ -85,6 +85,9 @@ class LinuxSandbox {
  private:
   friend struct DefaultSingletonTraits<LinuxSandbox>;
 
+  LinuxSandbox();
+  ~LinuxSandbox();
+
   // Some methods are static and get an instance of the Singleton. These
   // are the non-static implementations.
   bool InitializeSandboxImpl();
@@ -118,8 +121,7 @@ class LinuxSandbox {
   bool yama_is_enforcing_;  // Accurate if pre_initialized_.
   scoped_ptr<sandbox::SetuidSandboxClient> setuid_sandbox_client_;
 
-  ~LinuxSandbox();
-  DISALLOW_IMPLICIT_CONSTRUCTORS(LinuxSandbox);
+  DISALLOW_COPY_AND_ASSIGN(LinuxSandbox);
 };
 
 }  // namespace content