Add third-party VPN support to network details dialog

chrome/browser/ui/webui/options/chromeos/internet_options_handler.h

Index: chrome/browser/ui/webui/options/chromeos/internet_options_handler.h
diff --git a/chrome/browser/ui/webui/options/chromeos/internet_options_handler.h b/chrome/browser/ui/webui/options/chromeos/internet_options_handler.h
index 49b52228e2fd0cd83bcea2e07624f3088a033075..287922585a463d3d2b18cac4e79770e5f9752378 100644
--- a/chrome/browser/ui/webui/options/chromeos/internet_options_handler.h
+++ b/chrome/browser/ui/webui/options/chromeos/internet_options_handler.h
@@ -11,6 +11,7 @@
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 #include "chromeos/network/network_state_handler_observer.h"
+#include "extensions/browser/extension_registry_observer.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Browser;
@@ -36,7 +37,8 @@ namespace options {
 // ChromeOS internet options page UI handler.
 class InternetOptionsHandler
     : public ::options::OptionsPageUIHandler,
-      public chromeos::NetworkStateHandlerObserver {
+      public chromeos::NetworkStateHandlerObserver,
+      public extensions::ExtensionRegistryObserver {
  public:
   InternetOptionsHandler();
   ~InternetOptionsHandler() override;
@@ -49,6 +51,15 @@ class InternetOptionsHandler
   // WebUIMessageHandler (from OptionsPageUIHandler)
   void RegisterMessages() override;
 
+  // ExtensionRegistryObserver
+  void OnExtensionLoaded(content::BrowserContext* browser_context,
+                         const extensions::Extension* extension) override;
+  void OnExtensionUnloaded(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      extensions::UnloadedExtensionInfo::Reason reason) override;
+  void OnShutdown(extensions::ExtensionRegistry* registry) override;
+
   // Callbacks to set network state properties.
   void ShowMorePlanInfoCallback(const base::ListValue* args);
   void CarrierStatusCallback();
@@ -60,6 +71,9 @@ class InternetOptionsHandler
   void StartConnectCallback(const base::ListValue* args);
   void SetPropertiesCallback(const base::ListValue* args);
 
+  // Updates the list of VPN providers enabled in the primary user's profile.
+  void UpdateVPNProviders();
+
   // Refreshes the display of network information.
   void RefreshNetworkData();