[cleanup] Use Delegate method to control context menu and eliminate HtmlDialogWithoutContextMenuView

chrome/browser/chromeos/choose_mobile_network_dialog.h

Index: chrome/browser/chromeos/choose_mobile_network_dialog.h
diff --git a/chrome/browser/chromeos/choose_mobile_network_dialog.h b/chrome/browser/chromeos/choose_mobile_network_dialog.h
index a0a92be2e976882394a531c0b96ae925930a4432..2198249e024f5b02a6250adae63c5634815c8ff1 100644
--- a/chrome/browser/chromeos/choose_mobile_network_dialog.h
+++ b/chrome/browser/chromeos/choose_mobile_network_dialog.h
@@ -20,16 +20,18 @@ class ChooseMobileNetworkDialog : private HtmlDialogUIDelegate {
   ChooseMobileNetworkDialog();
 
   // Overridden from HtmlDialogUI::Delegate:
-  virtual bool IsDialogModal() const;
-  virtual std::wstring GetDialogTitle() const;
-  virtual GURL GetDialogContentURL() const;
+  virtual bool IsDialogModal() const OVERRIDE;
+  virtual std::wstring GetDialogTitle() const OVERRIDE;
+  virtual GURL GetDialogContentURL() const OVERRIDE;
   virtual void GetWebUIMessageHandlers(
-      std::vector<WebUIMessageHandler*>* handlers) const;
-  virtual void GetDialogSize(gfx::Size* size) const;
-  virtual std::string GetDialogArgs() const;
-  virtual void OnDialogClosed(const std::string& json_retval);
-  virtual void OnCloseContents(TabContents* source, bool* out_close_dialog);
-  virtual bool ShouldShowDialogTitle() const;
+      std::vector<WebUIMessageHandler*>* handlers) const OVERRIDE;
+  virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
+  virtual std::string GetDialogArgs() const OVERRIDE;
+  virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
+  virtual void OnCloseContents(
+      TabContents* source, bool* out_close_dialog) OVERRIDE;
+  virtual bool ShouldShowDialogTitle() const OVERRIDE;
+  virtual bool HandleContextMenu(const ContextMenuParams& params) OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(ChooseMobileNetworkDialog);
 };