Mac Sandbox: Clean up forward declaration of internal sandbox functions.

chrome/common/sandbox_mac_unittest_helper.h

Index: chrome/common/sandbox_mac_unittest_helper.h
diff --git a/chrome/common/sandbox_mac_unittest_helper.h b/chrome/common/sandbox_mac_unittest_helper.h
index 960a4cfdd1b817c556913333070034302952b371..674b2462382d9bb541ba8f44aaa85cc91375fa0f 100644
--- a/chrome/common/sandbox_mac_unittest_helper.h
+++ b/chrome/common/sandbox_mac_unittest_helper.h
@@ -50,7 +50,7 @@ class MacSandboxTest : public base::MultiProcessTest {
   // to the child process runing in the sandbox.
   // Returns true if the test passes, false if either of the functions in
   // the corresponding MacSandboxTestCase return false.
-  bool RunTestInSandbox(sandbox::SandboxProcessType sandbox_type,
+  bool RunTestInSandbox(sandbox::Sandbox::SandboxProcessType sandbox_type,
                         const char* test_name,
                         const char* test_data);