Clean exported headers of the VcsBase plugin.

Change-Id: Ibfe20bc7156e14e33fd0448586f5cc625494e008
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/vcsbase/vcscommand.h

@@ -33,9 +33,6 @@
 
 #include "vcsbase_global.h"
 
-#include <utils/fileutils.h>
-#include <utils/synchronousprocess.h>
-
 #include <QObject>
 
 QT_BEGIN_NAMESPACE
@@ -47,6 +44,12 @@ template <typename T>
 class QFutureInterface;
 QT_END_NAMESPACE
 
+namespace Utils {
+struct SynchronousProcessResponse;
+class ExitCodeInterpreter;
+class FileName;
+}
+
 namespace VcsBase {
 
 namespace Internal { class VcsCommandPrivate; }