Clean exported headers of the CppTools plugin.

Change-Id: I0144ac33e88980c431c54a6d69bbde28da4b1967
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/cpptools/insertionpointlocator.cpp

@@ -30,12 +30,15 @@
 
 #include "insertionpointlocator.h"
 
+#include "cppprojectfile.h"
 #include "cpptoolsreuse.h"
 #include "symbolfinder.h"
 #include "cpptoolsconstants.h"
 
 #include <coreplugin/icore.h>
 
+#include <cplusplus/LookupContext.h>
+
 #include <utils/qtcassert.h>
 
 using namespace CPlusPlus;