VcsBase: Use override consistently

clang-tidy fixes from modernize-use-override check.

Change-Id: I4775c493dbeefaf832b862f8740f216a3aacbfc6
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/vcsbase/baseannotationhighlighter.h

@@ -45,9 +45,9 @@ public:
 
     void setChangeNumbers(const ChangeNumbers &changeNumbers);
 
-    virtual void highlightBlock(const QString &text) override;
+    void highlightBlock(const QString &text) override;
 
-    virtual void setFontSettings(const TextEditor::FontSettings &fontSettings) override;
+    void setFontSettings(const TextEditor::FontSettings &fontSettings) override;
 
 private:
     // Implement this to return the change number of a line

src/plugins/vcsbase/diffandloghighlighter.h

@@ -51,7 +51,7 @@ public:
 
     void highlightBlock(const QString &text) override;
 
-    virtual void setFontSettings(const TextEditor::FontSettings &fontSettings) override;
+    void setFontSettings(const TextEditor::FontSettings &fontSettings) override;
 
 private:
     friend class DiffAndLogHighlighterPrivate;

src/plugins/vcsbase/vcsbasediffeditorcontroller.h

@@ -43,7 +43,7 @@ public:
     VcsBaseDiffEditorController(Core::IDocument *document,
                                 VcsBaseClientImpl *client,
                                 const QString &workingDirectory);
-    ~VcsBaseDiffEditorController();
+    ~VcsBaseDiffEditorController() override;
 
 protected:
     void runCommand(const QList<QStringList> &args, unsigned flags, QTextCodec *codec = nullptr);

src/plugins/vcsbase/vcsbaseoptionspage.h

@@ -69,8 +69,8 @@ public:
     explicit VcsClientOptionsPage(Core::IVersionControl *control, VcsBaseClientImpl *client, QObject *parent = 0);
 
     VcsClientOptionsPageWidget *widget() override;
-    virtual void apply() override;
-    virtual void finish() override;
+    void apply() override;
+    void finish() override;
 
 signals:
     void settingsChanged();