CppTools: Cleanup header/source test

Dynamically create data files in tempPath and clean them up when
finished.

Change-Id: Ie78f557b185b264acc0d0f5814646c203d8a93f4
Reviewed-by: Petar Perisin <petar.perisin@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

src/plugins/cpptools/cpptoolsplugin.h

@@ -77,6 +77,10 @@ public slots:
 
 private slots:
 #ifdef WITH_TESTS
+    // Init/Cleanup methods implemented in cppheadersource_test.cpp
+    void initTestCase();
+    void cleanupTestCase();
+
     void test_codegen_public_in_empty_class();
     void test_codegen_public_in_nonempty_class();
     void test_codegen_public_before_protected();