CppTools: Add CppToolsBridge

We broke the dependency of
BaseEditorDocumentProcessor *BaseEditorDocumentProcessor::get(const QString &filePath)

It's hiding static calls and it is much easier to do it that way than to
provide a reference to every user. It's also possible to exchange it with
different implementations for different test cases.

Change-Id: Ic74699b45948e8b48f7efb6a1b295ba2641b8951
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp

@@ -42,6 +42,7 @@
 #include <cpptools/cppcodemodelsettings.h>
 #include <cpptools/cppmodelmanager.h>
 #include <cpptools/cppprojects.h>
+#include <cpptools/cpptoolsbridge.h>
 #include <cpptools/cpptoolsreuse.h>
 #include <cpptools/cppworkingcopy.h>
 
@@ -249,7 +250,9 @@ void ClangEditorDocumentProcessor::clearDiagnosticsWithFixIts()
 
 ClangEditorDocumentProcessor *ClangEditorDocumentProcessor::get(const QString &filePath)
 {
-    return qobject_cast<ClangEditorDocumentProcessor *>(BaseEditorDocumentProcessor::get(filePath));
+    auto *processor = CppTools::CppToolsBridge::baseEditorDocumentProcessor(filePath);
+
+    return qobject_cast<ClangEditorDocumentProcessor*>(processor);
 }
 
 static bool isProjectPartLoadedOrIsFallback(CppTools::ProjectPart::Ptr projectPart)