Move the FlashClipboard API into the Flash one.

ppapi/thunk/enter.h

Index: ppapi/thunk/enter.h
diff --git a/ppapi/thunk/enter.h b/ppapi/thunk/enter.h
index 4172ce0e60b2863769946ee87e00ab866687742b..5c69acf5e326486abf9badd594b158d841e98c00 100644
--- a/ppapi/thunk/enter.h
+++ b/ppapi/thunk/enter.h
@@ -262,6 +262,13 @@ class PPAPI_THUNK_EXPORT EnterInstance
   ~EnterInstance();
 };
 
+class PPAPI_THUNK_EXPORT EnterInstanceNoLock
+    : public EnterFunctionNoLock<PPB_Instance_FunctionAPI> {
+ public:
+  EnterInstanceNoLock(PP_Instance instance);
+  ~EnterInstanceNoLock();
+};
+
 }  // namespace thunk
 }  // namespace ppapi