Debugger: Show base class names simplified

Especially for highly templated code it's awful to have the
name column populated by 'std::basic_string<...' gibberish.

Change-Id: I7344bed77a0e29cf88f031e1a663ed6c4c1c7b51
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/debugger/watchhandler.cpp

@@ -41,6 +41,7 @@
 #include "watchutils.h"
 
 #include <utils/algorithm.h>
+#include <utils/basetreeview.h>
 #include <utils/qtcassert.h>
 #include <utils/savedaction.h>
 
@@ -1070,6 +1071,14 @@ QString WatchModel::displayName(const WatchItem *item) const
         result = QLatin1Char('*') + item->parent->name;
     else
         result = removeNamespaces(item->name);
+
+    // Simplyfy names that refer to base classes.
+    if (result.startsWith(QLatin1Char('['))) {
+        result = simplifyType(result);
+        if (result.size() > 30)
+            result = result.leftRef(27) + QLatin1String("...]");
+    }
+
     return result;
 }