Clang: Add UpdateTranslationUnitsForEditorMessage

If an editor is changing all translation units independent of their project
part they must be updated too. So we introduce a new message to update all
translation units with the same file path.

Change-Id: I70d0ea2bbca9fa880111ff7219573e54f3277026
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/plugins/cpptools/editordocumenthandle.cpp

@@ -58,9 +58,9 @@ void CppEditorDocumentHandle::setNeedsRefresh(bool needsRefresh)
     m_needsRefresh = needsRefresh;
 }
 
-SendDocumentTracker &CppEditorDocumentHandle::sendTracker(const QString &projectPartId)
+SendDocumentTracker &CppEditorDocumentHandle::sendTracker()
 {
-    return m_documentRevisionManagements[projectPartId];
+    return m_sendTracker;
 }
 
 } // namespace CppTools